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1)/* write a program to print
001010010101010
*/#include<stdio.h>#include<conio.h>void main(){
int i,j,k;clrscr();for(i=1;i<=5;i++){
k=0;for(j=1;j<=i;j++){
printf("%d",k);if(k==1)
k=0;else
k=1;}printf("\n");
}getch();}Output: 0
01010010101010
2)/* write a program to print ABCDEFG ABCDEF ABCDE ABCD ABC AB A*/#include<stdio.h>#include<conio.h>void main(){
int i,j,l;clrscr();for(i=71;i>=65;i--){
for(l=1;l<=4;l++){
printf(" ");}for(j=65;j<=i;j++){
printf("%c",j);}printf("\n");
}getch();
}Output: ABCDEFG ABCDEF ABCDE ABCD ABC AB A
3)/*write a program to insert 5 numbers using array find its sum and average*/
#include<stdio.h>#include<conio.h>void main(){
int i,a[5],sum=0;float avg=1;clrscr();for(i=0;i<5;i++){
printf("no[%d]=",i);scanf("%d",&a[i]);sum=sum+a[i];avg=(float)sum/5;
}printf("sum=%d\n",sum);printf("avg=%.2f",avg);
getch();}/* outputno[0]=1no[1]=2no[2]=3no[3]=4no[4]=5sum=15avg=3.00*/
4)/* write a program to sort numbers using bubbel sort*/#include<stdio.h>#include<conio.h>void main(){
int a[5],i,j,temp=0;clrscr();for(i=0;i<=4;i++){
printf("enter (%d) no=",i+1);scanf("%d",&a[i]);
}for(i=0;i<=4;i++)
{for(j=i+1;j<=4;j++){
if(a[i]>a[j]){
temp=a[i];a[i]=a[j];a[j]=temp;
}}
}
for(i=0;i<=4;i++){printf("%d\n",a[i]);}getch();
}/* outputenter (1) no=9enter (2) no=5 enter (3) no=42 enter (4) no=6 enter (5) no=2 2 5 6 9 42*/ 5)/* write a program to count odd numbers from entered numbers.*/#include<stdio.h>#include<conio.h>void main(){
int i,j,no,n,o=0;clrscr();printf("how many nos.you want to enter =");scanf("%d",&no);
for(i=1;i<=no;i++){
printf("no[%d]=",i);scanf("%d",&n);if(n%2!=0){
o++;}
}printf("odd=%d",o);getch();
}/* outputhow many nos.you want to enter =5no[1]=1 no[2]=2 no[3]=5 no[4]=6 no[5]=7 odd=3*/ 6)/* write a program to convert string in lower case to upper case*/#include<stdio.h>#include<conio.h>void main(){
char a[30];int i,l;clrscr();puts("enter your string in lower case=");gets(a);l=strlen(a);for(i=0;a[i]!='\0';i++){
if(a[i]>='a'&&a[i]<='z'){
a[i]=a[i]-32;}
}
puts(a);getch();
}/* outputenter your string in lower case=i am learning I AM LEARNING*/
7)/*write a program to find gcd(hcf) and lcm of any two numbers using function */#include<stdio.h>#include<conio.h>void gcd(int,int);void main(){
int n1,n2;clrscr();puts("enter no1 ==>");scanf("%d",&n1);puts("enter no2 ==>");scanf("%d",&n2);gcd(n1,n2);getch();
}
void gcd(int n1,int n2){ int product,temp,lcm;
product=n1*n2;while(n1>0){
if(n1<n2){
temp=n1;n1=n2;n2=temp;
}n1=n1%n2;
}printf("gcd=%d",n2);/*greatest common diviser(gcd)/(hcf)*/lcm=product/n2;printf("\nlcm=%d",lcm);
}/* outputenter no1 ==>12enter no2 ==>18gcd=6lcm=36*/
8)/*write a program to find gcd(hcf) and lcm of any two numbers*/#include<stdio.h>#include<conio.h>void main(){
int n1,n2,temp,lcm,product;clrscr();puts("enter no1 ==>");scanf("%d",&n1);puts("enter no2 ==>");scanf("%d",&n2);product=n1*n2;while(n1>0){
if(n1<n2){
temp=n1;n1=n2;n2=temp;
}n1=n1%n2;
}printf("gcd=%d",n2);/*greatest common diviser(gcd)/(hcf)*/lcm=product/n2;printf("\nlcm=%d",lcm);getch();
}/*outputenter no1 ==>12enter no2 ==>
18gcd=6lcm=36*/
9)/* write a program to find maximum number
from a matrix */#include<stdio.h>#include<conio.h>void main(){
int i,j,a[10][10],m,n,p,q,max=0;clrscr();printf("no. of raws==>");scanf("%d",&m);printf("no. of columns==>");scanf("%d",&n);for(i=0;i<m;i++){
for(j=0;j<n;j++){
printf("a[%d][%d]=",i,j);scanf("%d",&a[i][j]);
}
}printf("\n\n");for(i=0;i<m;i++){
for(j=0;j<n;j++){
printf("%5d",a[i][j]);}printf("\n");
}printf("\n\n");max=a[0][0];for(i=0;i<m;i++){
for(j=0;j<n;j++){
if(max<a[i][j])
{max=a[i][j];
}}
}printf("max=%d",max);getch();
}/* outputno. of raws==>3no. of columns==>3a[0][0]=54a[0][1]=65a[0][2]=32a[1][0]=52a[1][1]=65a[1][2]=68a[2][0]=95a[2][1]=42a[2][2]=32
54 65 32 52 65 68 95 42 32
max=95*/
10)/* write a program to find maximum number from array of ten numbers*/#include<stdio.h>#include<conio.h>void main(){
int a[10],max=0,i;clrscr();for(i=0;i<=9;i++){
printf("enter the number:");scanf("%d",&a[i]);
}
for(i=0;i<=9;i++){
printf("a[%d]=%d\n",i,a[i]);if(max<a[i]){ max=a[i];}
}printf("the maximum is %d",max);getch();
}/* outputenter the number:21enter the number:45enter the number:26enter the number:35enter the number:44enter the number:66enter the number:58enter the number:12enter the number:32enter the number:52a[0]=21a[1]=45a[2]=26a[3]=35a[4]=44a[5]=66a[6]=58a[7]=12a[8]=32a[9]=52the maximum is 66*/
11)/* write a program for enter two matrix and print its multiplication*/#include<stdio.h>#include<conio.h>void main(){
int a[10][10],b[10][10],c[10][10]={0},i,j,k,m,n,p,q;clrscr();printf("enter rows of matrix a=");scanf("%d",&m);printf("enter columns of matrix a=");scanf("%d",&n);for(i=0;i<m;i++){
for(j=0;j<n;j++){
printf("a[%d][%d]=",i,j);scanf("%d",&a[i][j]);
}
}printf("\n");for(i=0;i<m;i++){
for(j=0;j<n;j++){printf("%3d",a[i][j]);}printf("\n");
}
printf("\n\n enter rows of matrix b=");scanf("%d",&p);printf("enter columns of matrix b=");scanf("%d",&q);for(i=0;i<p;i++){
for(j=0;j<q;j++){
printf("b[%d][%d]=",i,j);scanf("%d",&b[i][j]);
}}
for(i=0;i<p;i++){
for(j=0;j<q;j++){printf("%3d",b[i][j]);}
printf("\n");}printf("\n\n");for(i=0;i<m;i++){
for(j=0;j<q;j++){
for(k=0;k<p;k++){
c[i][j]+=a[i][k]*b[k][j];
}
}
}printf("multiplication is\n\n");for(i=0;i<m;i++){
for(j=0;j<q;j++){
printf("%5d",c[i][j]);}printf("\n");
}getch();
}/*outputenter rows of matrix a=2enter columns of matrix a=3a[0][0]=1a[0][1]=2a[0][2]=3a[1][0]=4a[1][1]=5a[1][2]=6
1 2 3 4 5 6
enter rows of matrix b=3
enter columns of matrix b=2b[0][0]=4b[0][1]=2b[1][0]=5b[1][1]=3b[2][0]=1b[2][1]=6 4 2 5 3 1 6
multiplication is
17 26 47 59*/
12)/* write a program to find NCR using function*/#include<stdio.h>#include<conio.h>int fact(int);void main(){
int no,r,ncr;clrscr();printf("enter your n=");scanf("%d",&no);printf("enter your r=");scanf("%d",&r);ncr=fact(no)/(fact(no-r)*fact(r));printf("ncr=%d",ncr);getch();
}int fact(int x){
int i=1;while(x>0){
i=i*x;
x--;}return i;
}/* outputenter your no=5enter your r=3ncr=10*/
13)/* write a program to count odd numbers,even numbers
and zeros from 5 numbers using array*/#include<stdio.h>#include<conio.h>void main(){
int n[5],i,j,e=0,o=0,z=0;clrscr();for(i=0;i<=4;i++){
printf("no[%d]=",i+1);scanf("%d",&n[i]);
if(n[i]==0){ z=z+1;}else if(n[i]%2==0){ e=e+1;}else{ o=o+1;}
}printf("even=%d\n",e);printf("odd=%d\n",o);printf("zero=%d\n",z);getch();
}
/* outputno[1]=1no[2]=0no[3]=2no[4]=3no[5]=4even=2odd=2zero=1*/
14)/*write a program to check wheather the number
is prime or consonunt*/#include<stdio.h>#include<conio.h>void prime(int);
void main(){
int no;clrscr();printf("enter your no=");scanf("%d",&no);prime(no);getch();
}void prime(int x){
int i,g=0;for(i=2;i<=x-1;i++){
if(x%i==0){g=1;break;}
}if (g==1){
printf("the no is consonunt");}
else{
printf("the no is prime");}
}/*outputenter your no=7the no is primeenter your no=9the no is consonunt*/
15)/*write a program to print reverce string of given string*/#include<stdio.h>#include<conio.h>void main(){char s[100],temp;int i,j,len=0;clrscr();puts("enter the string");gets(s);
for(i=0;s[i]!='\0';i++,len++)len=i;
for(i=0,j=len-1;i<j;i++,j--){
temp=s[i];s[i]=s[j];s[j]=temp;
}puts(s);
getch();}/* outputenter the stringstringgnirts*/
16)/* write a program to print numbers in reverse
order using array*/#include<stdio.h>#include<conio.h>void main(){
int a[5],i,j,k;clrscr();for(i=0;i<=4;i++){
printf("enter your no=");scanf("%d",&a[i]);
}printf("\n\n reverse \n");for(i=4;i>=0;i--){
printf("\n %d",a[i]);}getch();
}/* outputenter your no=121enter your no=23enter your no=21enter your no=14enter your no=25
reverse
25 14 21 23 121*/
17)/* write a program to count spaces from the entered string*/#include<stdio.h>#include<conio.h>void main()
{char s[30];int i,a=0;clrscr();puts("enter your string==>");gets(s);for(i=0;s[i]!='\0';i++){
if(s[i]==' '){
a++;}
}printf("there are %d spaces in given string\n",a);getch();
}/* outputenter your string==>i am learning c languagethere are 4 spaces in given string*/
18)/* write a program to print a following design
enter your no=3 * 1 2 A B C*/#include<stdio.h>#include<conio.h>void main(){
int i,l,j,k,a=1,b=2,c=3,no;clrscr();printf("enter your no=");scanf("%d",&no);for(i=1;i<=no;i++){
for(k=1;k<=40-i;k++){
printf(" ");
}l=65;for(j=1;j<=i;j++){
if(i==j){
if(a==i){
printf("* ");a=i+3;
}else if(b==i){
printf("%d ",j);b=i+3;
}else{
printf("%c ",l);c=i+3;
}}
else{
if(a==i){
printf("* ");}else if(b==i){
printf("%d ",j);}else{
printf("%c ",l);l++;
}}
}printf("\n\n");}
getch();}/* outputenter your no=5 * 1 2 A B C * * * * 1 2 3 4 5*/
19)/* write a program to find total wovels,a,e,i,o,u,length,spaces,words and
characters from the string */#include<stdio.h>#include<conio.h>void main(){
char s[30];int i,l,cv=0,ci=0,ca=0,cu=0,ce=0,co=0,cw=0,cs=0,cc=0;clrscr();puts("enter your string ===>");printf("\n");gets(s);l=strlen(s);for(i=0;s[i]!='\0';i++){
if(s[i]=='a'||s[i]=='A'){
ca++;}if(s[i]=='e'||s[i]=='E'){
ce++;}if(s[i]=='o'||s[i]=='O'){
co++;}if(s[i]=='i'||s[i]=='I'){
ci++;}
if(s[i]=='u'||s[i]=='U'){
cu++;}if(s[i]==' '){
cs++;}cc=l-cs;cw=cs+1;cv=ca+ce+ci+co+cu;
}printf("\ntotal no of wovel=%d\n",cv);printf("\ntotal no a=%d\n",ca);printf("\ntotal no e=%d\n",ce);printf("\ntotal no i=%d\n",ci);printf("\ntotal no o=%d\n",co);printf("\ntotal no u=%d\n",cu);printf("\ntotal length=%d\n",l);printf("\ntotal no of space=%d\n",cs);printf("\ntotal no of words=%d\n",cw);printf("\ntotal no character=%d\n",cc);getch();
}/* outputenter your string ===>
i am learning c language
total no of wovel=9
total no a=4
total no e=2
total no i=2
total no o=0
total no u=1
total length=24
total no of space=4
total no of words=5
total no character=20*/
20)/* write a program to find length of the string
without using strlen()*/#include<stdio.h>#include<conio.h>void main(){
int i,l=0;char c[30];clrscr();printf("enter your name=");scanf("%s",c);for(i=0;c[i]!='\0';i++){
l++;}printf("the length of %s is =%d",c,l);getch();
}/* outputenter your name=asdfghjklthe length of asdfghjkl is =9*/ 21)/* write a program to find sum of 10 numbers
using structure */#include<stdio.h>#include<conio.h>struct emp{
int no,a;}abs;void main(){
int i;clrscr();
for(i=0;i<10;i++){
printf("enter your no[%d]=",i+1);scanf("%d",&abs.a);abs.no=abs.no+abs.a;
}printf("sum=%d",abs.no);getch();
}/* outputenter your no[1]=10enter your no[2]=20enter your no[3]=30enter your no[4]=40enter your no[5]=50enter your no[6]=60enter your no[7]=70enter your no[8]=80enter your no[9]=90enter your no[10]=100sum=550*/
22)/* write a program to find sum of odd numbers
between the given range */#include<stdio.h>#include<conio.h>int sum(int,int);void main(){
int a,b;int i;clrscr();printf("enter the starting value=");scanf("%d",&a);printf("enter the ending value=");scanf("%d",&b);printf("sum=%d",sum(a,b));getch();
}int sum(int a,int b){
int i,s=0;for(i=a;i<=b;i++){
if(i%2!=0){
s=s+i;}
}return s;
}/* outputenter the starting value=100enter the ending value=200sum=7500*/
23)/* write a program to print string as its length's size eg. entered string= abc then print abc 3 times */
#include<stdio.h>#include<conio.h>void main(){
char n[30],temp;int i,j,l;clrscr();puts("enter your string=");gets(n);l=strlen(n);printf("\n");for(i=0,j=i+1;i<l;i++,j++){
temp=n[j];n[j]=n[j+1];n[j]=temp;puts(n);
}getch();
}
/* outputenter your string=abcd
abcdabcdabcdabcd*/
24)/* write a program to print string's possible rottetions
like for spacepacesacespcespaespacspace */
#include<stdio.h>#include<conio.h>void main(){
char n[30],temp;int i,j,l;clrscr();puts("enter your string=");gets(n);l=strlen(n);printf("\n");for(i=0;i<l;i++){
temp=n[0];for(j=0;j<l-1;j++){n[j]=n[j+1];}n[j]=temp;puts(n);
}getch();
}/* outputenter your string=
string
tringsringstingstrngstrigstrinstring/*
25) 1)Write a program to find the sum of the given series Ar+ar 2 +ar 3 + ……..NTERMS.
#include<stdio.h>#include<conio.h>void main(){
int i,j,no,x,a,sum=0,mul=0,mul1=0;clrscr();printf("enter the value of no=");scanf("%d",&no);printf("enter the value of x=");scanf("%d",&x);printf("enter the of a=");scanf("%d",&a);for(i=1;i<=no;i++){
sum=1;
for(j=1;j<=i;j++){
sum=sum*x;}mul=a*sum;printf("\t %d",mul);mul1=mul1+mul;}
printf("\n the mul1=%d",mul1);
getch();}
Output:
enter the value of no=5enter the value of x=2enter the of a=4 8 16 32 64 128 the mul1=248
26) 2. Write a program to find the SUM OF 5 NO WITH ARRAY:#include<stdio.h>#include<conio.h>void main(){
int a[5],i,sum=0;clrscr();for(i=0;i<5;i++){
printf("no ");scanf("%d",&a[i]);sum=sum+a[i];
}for(i=0;i<5;i++){
printf(" \n value %d is %d",i+1,a[i]);}printf("\n the total sum is %d",sum);
getch();}
OUTPUT:no 3no 2no 5no 6no 7
value 1 is 3 value 2 is 2 value 3 is 5 value 4 is 6 value 5 is 7
the total sum is 23
27) Write a program to print given TRINGLE:
1 123 12345 123456
#include<stdio.h>#include<conio.h>void main(){
int i,j,l,no,x;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1,x=1;i<=no;i=i+2,x++){
for(l=1;l<=40-x;l++){
printf(" ");}for(j=1;j<=i;j++){
printf("%d",j);}
printf("\n");}getch();
}OUTPUT:enter the no=6 1 123 12345 123456
28) Write a program to find maximum from given n NO’s.
#include<stdio.h>#include<conio.h>void main(){
int count=0,limit=0,i,num,no,max;clrscr();printf("enter the value of limit=");scanf("%d",&limit);for(i=1;i<=limit;i++){
printf("enter the no=");scanf("\n %d",&no);
if(max<no){
max=no;}count=count++;
}printf("the max no=%d",max);
getch();}OUTPUT:
enter the value of limit=4enter the no=5enter the no=6enter the no=7enter the no=4the max no=7
29) Write a program to print a fibonaci series of the given n terms.#include<stdio.h>#include<conio.h>void main(){ int a,b,c,no,i;
clrscr();printf("enter the vlue of no=");
scanf("%d",&no);a=1;b=0;c=0;for(i=1;i<=no;i++){
c=a+b;printf(" %d\t",c);a=b;b=c;
}getch();
}Output:enter the vlue of no=8
1 1 2 3 5 8 13 21
30) Write a program to print following series 11/1! 22/2! 33/3! 44/4!..........nn/n!
#include<stdio.h>#include<conio.h>void main(){
float i,j,no,pow=0,fact=0;clrscr();printf("enter the no=");scanf("%f",&no);for(i=1;i<=no;i++){
pow=1;fact=1;for(j=1;j<=i;j++){
pow=pow*i;fact=fact*j;
}printf("\t %.2f",mul/mul1);
}getch();
}Output:enter the no=5
1.00 2.00 4.50 10.67 26.04
30) Write a program to print following series:1 3 2 3 3 3 4 3 5 3 ……………n 3
#include<conio.h>#include<stdio.h>void main(){
int i,j,a,b,no,x,sum=0;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){ sum=i*i*i;
printf("\t %d",sum);}getch();
}
Output:enter the no=5 1 8 27 64 125the mul=225
31) enter the name and pint tringle:#include<stdio.h>#include<conio.h>#include<string.h>void main(){
char a[20];int i,j,l,k;clrscr();printf("enter your name=");scanf("%s",&a);l=strlen(a);printf("length:%d \n ",l);
for(i=0;i<=l;i++){
for(k=0;k<=40-i;k++){
printf(" ");}
for(j=0;j<i;j++){
printf("%c ",a[j]);}printf("\n");
}getch();
}
Output:enter your name=miteshlength:6
m m i m i t m i t e m i t e s
m i t e s h
32) write a program to print a following design 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5
#include<stdio.h>#include<conio.h>
void main(){
int l,c,no;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=1;l<=no;l++){
for(c=1;c<=l;c++){
printf("%d",c);}printf("\n");
}getch();
}Output:enter the no of line to be printed=5 1 2 2 3 3 3 4 4 4 4 5 5 5 5 5
33) write a program to print a following design 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
#include<stdio.h>#include<conio.h>void main(){
int l,c,no,co=0;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=1;l<=no;l++){
for(c=1;c<=l;c++)
{co=co+1;printf("%3d",co);
}
printf("\n");}getch();
}Output:enter the no of line to be printed=5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
34) write a program to print a following design 1
2 2 3 3 3 2 2 1#include<stdio.h>#include<conio.h>void main(){
int l,c,no,k;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=1;l<=no;l++){
for(k=1;k<=40-l;k++) {
printf(" "); }
for(c=1;c<=l;c++){
printf("%3d",l);}printf("\n");
}for(l=no-1;l>=1;l--){
for(k=1;k<=40-l;k++) {
printf(" "); }
for(c=1;c<=l;c++){
printf("%3d",l);}printf("\n");
}
getch();}
Output:enter the no of line to be printed=3 1 2 2 3 3 3 2 2
135)write a program to print a following design 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 #include<stdio.h>#include<conio.h>void main(){
int l,c,no,;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=no;l>=1;l--){
for(c=l;c>=1;c--)
{
printf("%3d",c);}
printf("\n");}getch();
}Output:enter the no of line to be printed=5 5 4 3 2 1 4 3 2 1 3 2 1 2 1 1 36) Write a program to find a average of any 10 number #include<stdio.h>#include<conio.h>void main(){
int n[9],i;float avg,sum=0.0;clrscr();for(i=0;i<=9;i++){
printf("enter no (%d)=",i);scanf("%d",&n[i]);
}for(i=0;i<=9;i++){
sum=sum+n[i];}avg=sum/i+1;printf("\n \n avg of 10 no=%.2f",avg);getch();
}
Output:enter no (0)=5enter no (1)=6
enter no (2)=7enter no (3)=4enter no (4)=3enter no (5)=2enter no (6)=3enter no (7)=4enter no (8)=5enter no (9)=3
avg of 10 no=5.40
37) print multiplication table for n given nos#include<stdio.h>#include<conio.h>void main(){
int i,no,j;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){
for(j=1;j<=10;j++){
printf("\n %3d*%3d=%3d",i,j,i*j);}printf("\n");
}getch();
}Output:enter the no=2
1* 1= 1 1* 2= 2 1* 3= 3 1* 4= 4 1* 5= 5 1* 6= 6
1* 7= 7 1* 8= 8 1* 9= 9 1* 10= 10
2* 1= 2 2* 2= 4 2* 3= 6 2* 4= 8 2* 5= 10 2* 6= 12 2* 7= 14 2* 8= 16 2* 9= 18 2* 10= 20
38) write a program to print a following design (Blink effect) 1
1 2 1 2 3 1 2 3 4 1 2 3 4 5#include<stdio.h>#include<conio.h>void main(){
int i,j,no,l,color;clrscr();textbackground(6);textcolor(128);
printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){ for(l=1;l<=40-i;l++)
{printf(" ");
}for(j=1;j<=i;j++){ cprintf("%d ",j);}
printf("\n");
}getch();
}Ouitput:enter the no=5 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
39) write a program to find a given no pallindrome or not?(121=rev of 121=121 its a pallindrome)#include<stdio.h>#include<conio.h>void main(){
int no,d,sc,rev=0;clrscr();printf("\nenter no(chek for pallinrome)=");scanf("%d",&no);sc=no; //second copy of nowhile(no>0){
d=no%10;rev=rev*10+d;no=no/10;
}if(rev==sc){
printf("\n \n %d is pallindrome",sc);}else{
printf("\n \n%d is not pallindrome",sc);}getch();
}
Output:
enter no(chek for pallinrome)=121
121 is palindrome
enter no(chek for pallinrome)=132
132 is not pallindrome
40) Write a program to count a even and odd no from an array#include<stdio.h>#include<conio.h>void main(){
int i,n[10],coe=0,coo=0;clrscr();for(i=0;i<=9;i++){
printf("enter no (%d)=",i);scanf("%d",&n[i]);
}for(i=0;i<=9;i++){
if(n[i]%2==0){
coe=coe+1;}else{
coo=coo+1;}
}printf("the total even no=%2d",coe);printf("\n the total odd no=%2d",coo);getch();
}
Output:enter no (0)=3enter no (1)=2enter no (2)=5enter no (3)=6enter no (4)=7enter no (5)=8enter no (6)=5
enter no (7)=9enter no (8)=6enter no (9)=3the total even no= 4 the total odd no= 6
41) write a program to print a following disign
111111111111111
#include<stdio.h>#include<conio.h>void main(){
int l,c,no;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=1;l<=no;l++){
for(c=1;c<=l;c++){
printf("1");}printf("\n");
}getch();
}Output:enter the no of line to be printed=5111111111111111
42) write a program to find the reverce of a given no?(153=rev of 351)#include<stdio.h>
#include<conio.h>void main(){
int no,d,sc,rev=0;clrscr();printf("\nenter no(find for reverce)=");scanf("%d",&no);sc=no; //second copy of nowhile(no>0){
d=no%10;rev=rev*10+d;no=no/10;
}printf("\n \n %d is rev",rev);
getch();}
Output:
enter no(find for reverce)=123 321 is rev
43)write a program to print following disign******
#include<stdio.h>#include<conio.h>void main(){
int l,c,no;clrscr();printf("enter the no of line to be printed=");scanf("%d",&no);for(l=1;l<=no;l++){
for(c=1;c<=l;c++){
printf("*");}
printf("\n");}getch();
}Output; enter the no of line to be printed=4**********
44) write a program to find the sum of digit of a given no?(153= 1 + 5 + 3 = 9)#include<stdio.h>#include<conio.h>void main(){
int no,d,sum=0;clrscr();printf("\nenter no(find for sum of digit)=");scanf("%d",&no);while(no>0){
d=no%10;sum=sum+d;no=no/10;
}printf("\n \n %d is sum",sum);
getch();}
Output:
enter no(find for sum of digit)=453
12 is sum
46) /*reading and writing contents in a file we want to make aprogaram to copy a.dat file into b.dat file the steps involves are1. opening a both the file. one to read form and another file in write form.
2. reading a one character from a file a.dat and writing in onto b.datuntill the end of the a.dat file and then closing the both the file*/#include<stdio.h>void main(){ char c;
FILE *p1,*p2;p1=fopen("a.dat","r");p2=fopen("b.dat","w");while((c=fgetc(p1)!=EOF)){
fputc(c,p2);}fclose(p1);fclose(p2);getch();
}
47) /* Write a program to read a file and display its contents along withline numbers before each line*/#include<stdio.h>void main(){
FILE *fp;char ch;char source[67];int count = 1;clrscr();puts("enter the file name:");gets(source);fp=fopen(source,"r");// read only mode for the source fileif(fp==NULL){
puts("unable to open the file:");getch();exit();
}clrscr();printf("file name:%s",source);printf("\n line:-%d\t",count);while((ch=getc(fp))!=EOF){
if(ch=='\n')
{count++;printf("\nline:-%d\t",count);
}else{
printf("%c",ch);}
}printf("\n press any key...");getch();fclose(fp);
}
48) /* write a program to find the size of a text file without traversingit characterby character*/#include<stdio.h>#include<conio.h>#include<dos.h>void main(){
struct entry{
char fname[8];char ext[3];char unusual[17];long int size;
};struct entry e[16];int i,j,c;char yname[8];char ch=1,len,len1;clrscr();absread(0,1,5,e);for(i=0;i<16;i++)
printf("%s %s %d\n",e[i].fname,e[i].ext,e[i].size);
printf("enter the filename whose size is to be found");scanf("%s",&yname);len1=len=strlen(yname);
i=0;while(i<16){
while(len--!=0){
if(e[i].fname[len]==yname[len])ch=0;else{
ch=1;break;
}}if(ch==0&&len==-1)break;len=len1;i++;
}if(ch==0){
printf("%s",e[i].fname);printf("\t%ld bytes",e[i].size);
}else
printf("h");getch();
}
49) /* write a program to copy one file to another.while doing so replace all lower case characters totheir equivalent uppercase characters*/
/* program to copy one text file to another andreplace all lower case characters to upper case*/#include<stdio.h>#include<conio.h>void main(){
FILE *fs,*ft;char ch;char source[67],target[67];clrscr();
puts("enter source file name:");gets(source);puts("enter target file name:");gets(target);fs=fopen(source,"r");/* read only mode for source file*/if(fs==NULL){
puts("unable to open file");getch();exit();
}ft=fopen(target,"w+");/* write /modify mode for target file*/if(ft==NULL){
fclose(fs);puts("unable to open target file");getch();exit();
}while(1){
ch=fgetc(fs);if(ch==EOF)
break;else{
/* replace the lower case characterby upper case character*/if(islower(ch))
fputc(toupper(ch),ft);else
fputc(ch,ft);}
}printf("\n file copied!!");fclose(fs);fclose(ft);getch();
}
50) /* suppose a file contains students recotrdes with each
records wioth each record containing name and age of a student write a program to read these records and dispaly them in sorted order by name*/
/* to read records from a file and display them in ascending order of names*/ /* note that STUDENT.DAT file is already created and data written in it using fwrite()*/ #include<stdio.h> void main() {
FILE *fp;struct stud{
char name[40];int age;
};struct stud s, stud[10],temp;int n,j,k,ii;clrscr();fp=fopen("STUDENT.DAT","rb");n=0;while(fread(&s,sizeof(s),1,fp)==1){
stud[n]=s;n++;
}for(j=0;j<n-1;j++){
for(k=j+1;k<n;k++){
if(strcmp(stud[j].name,stud[k].name)>0){
temp=stud[j];stud[j]=stud[k];stud[k]=temp;
}}
}fclose(fp);for(j=0;j<n;j++)
printf("\name:%s ,age,:%d",stud[j].name,stud[j].age);
printf("\n\n\n\n\n press any key to exit....");getch();
}
51) /* suppose a file contains students recotrdes with eachrecords wioth each record containing name and age of a student write a program to read these records and dispaly them in sorted order by name*/
/* to read records from a file and display them in ascending order of names*/ /* note that STUDENT.DAT file is already created and data written in it using fwrite()*/ #include<stdio.h> void main() {
FILE *fp;struct stud{
char name[40];int age;
};struct stud s, stud[10],temp;int n,j,k,ii;clrscr();fp=fopen("STUDENT.DAT","rb");n=0;while(fread(&s,sizeof(s),1,fp)==1){
stud[n]=s;n++;
}for(j=0;j<n-1;j++){
for(k=j+1;k<n;k++){
if(strcmp(stud[j].name,stud[k].name)>0){
temp=stud[j];stud[j]=stud[k];stud[k]=temp;
}}
}fclose(fp);for(j=0;j<n;j++)
printf("\name:%s ,age,:%d",stud[j].name,stud[j].age);printf("\n\n\n\n\n press any key to exit....");getch();
}
52)Write a program to print following series:enter the no=51.00 +0.50 +0.33 +0.25 +0.20 +=5.00
#include<stdio.h>#include<conio.h>void main(){
int i,j,no;float sum=0,mul=1;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){
mul=1;for(j=1;j<=i;j++){
mul=(float)1/i;sum=sum+mul;
}printf("%.2f ",mul);
}printf("=%.2f",sum);getch();
}output:enter the no=51.00 +0.50 +0.33 +0.25 +0.20 +=5.00
53)Write a program to print following series:enter the no=51 +2 +6 +24 +120 +=153
#include<stdio.h>#include<conio.h>void main(){
int i,j,no;int sum=0,mul=1;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){
sum=0;mul=1;for(j=1;j<=i;j++){
mul=mul*j;sum=sum+mul;
}printf("%d +",mul);
}printf("=%d",sum);getch();
}output:enter the no=51 +2 +6 +24 +120 +=153
54)Write a program to print following series:enter the no=51 +11 +111 +1111 +11111 +=12345
#include<stdio.h>#include<conio.h>
void main(){
int i,j,no;int sum=0,mul=1;clrscr();printf("enter the no=");scanf("%d",&no);
for(i=1;i<=no;i++){
sum=0;mul=0;for(j=1;j<=i;j++){
mul=mul*10+1;sum=sum+mul;
}printf("%d +",mul);
}printf("=%d",sum);getch();
}output:enter the no=51 +11 +111 +1111 +11111 +=12345
55) Write a program to print following series:enter the no=5enter the value of x=22 +4 +8 +16 +32 +=62
#include<stdio.h>#include<conio.h>void main(){
int i,j,no,x,sum=0,mul=1;clrscr();printf("enter the no=");scanf("%d",&no);
printf("enter the value of x=");scanf("%d",&x);for(i=1;i<=no;i++){
sum=0;mul=1;for(j=1;j<=i;j++){
mul=mul*x;sum=sum+mul;
}printf("%d +",mul);
}printf("=%d",sum);getch();
}output:enter the no=5enter the value of x=22 +4 +8 +16 +32 +=62
56)Write a program to print following series:enter the no=51 +4 +27 +256 +3125 +=3905
#include<stdio.h>#include<conio.h>void main(){
int i,j,no,x,sum=0,mul=1;clrscr();printf("enter the no=");scanf("%d",&no);for(i=1;i<=no;i++){
sum=0;mul=1;for(j=1;j<=i;j++){
mul=mul*i;sum=sum+mul;
}printf("%d +",mul);
}printf("=%d",sum);
getch();}
output:enter the no=51 +4 +27 +256 +3125 +=3905
