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Assignment – Programming in C

Q. WAP to check entered string is palindrome or not.

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

char ch[20],ch1[20];

clrscr();

printf("Enter the String\n");

gets(ch);

strcpy(ch1,ch);

strrev(ch1);

if((strcmp(ch,ch1))==0)

{

printf("Palindrome\n");

}

else

{

printf("Not Palindrome\n");

}

getch();

}

Output:

1


Q. WAP to check the entered character is vowel or not

#include<stdio.h>

#include<conio.h>

void main()

{

char c;

clrscr();

printf("Enter a character\n");

scanf("%c",&c);

if(c=='a' || c=='e' || c=='i' || c=='o' || c=='u'

|| c=='A' || c=='E' || c=='I' || c=='O' || c=='U')

{

printf("%c is a Vowel\n",c);

}

else

{

printf("%c is not a Vowel\n",c);

}

getch();

}

Output:

2


Q. WAP to check the entered number is Armstrong or not.

#include<stdio.h>

#include<conio.h>

void main()

{

int num,sum=0,temp,rem;

clrscr();

printf("Enter the number you want to check:\n");

scanf("%d",&num);

temp=num;

while(temp!=0)

{

rem=temp%10;

sum=sum+rem*rem*rem;

temp = temp/10;

}

if(num==sum)

printf("Number is an armstrong number\n");

else

printf("Number is not an armstrong number\n");

getch();

}

Output:

3


Q. WAP to find Fibonacci series.

#include<stdio.h>#include<conio.h>#include<conio.h>long int fibbo(int x);void main(){ int n,i; clrscr(); printf("Enter the number of terms in series\n"); scanf("%d",&n); printf("Fibonacci series:\n"); for(i=1;i<=n;i++) { printf("%ld\t",fibbo(i)); } getch();}long int fibbo(int x){ if(x==1 || x==0) return 1; else { return(fibbo(x-1)+fibbo(x-2)); }}

Output :

4


Q. WAP to print the following pattern :

********* ******* ***** *** *

#include<stdio.h>#include<conio.h>void main(){ int i,j,k,row; clrscr(); printf("Enter the number of rows you want:\n"); scanf("%d",&row); for(i=row;i>=1;i--) { for(j=row;j>i;j--) { printf(" "); } for(k=1;k<(i*2);k++) { printf("*"); } printf("\n"); } getch();}

Output:

5


Q. WAP to print the following pattern (Floyd's Triangle):

1 2 3 4 5 6 7 8 9 1011 12 13 14 15

#include<stdio.h>#include<conio.h>void main(){ int row,i,j,c=1; clrscr(); printf("Enter the number of rows you want: \n"); scanf("%d",&row); for(i=1;i<=row;i++) { for(j=1;j<=i;j++) { printf("%3d ",c); c++; } printf("\n"); } getch();}

Output:

6


Q. WAP to solve Tower of Hanoi problem.

#include<stdio.h>#include<conio.h>void toh(int,char,char,char);void main(){ int n=3; clrscr(); toh(n,'A','B','C'); getch();}void toh(int n,char a,char b,char c){ if(n==1) { printf("\nMoved from %c to %c",a,c); } else { toh(n-1,a,c,b); toh(1,a,' ',c); toh(n-1,b,a,c); }}

Output:

7


Q. WAP to calculate sum of A.P. series

#include<stdio.h>#include<conio.h>#include<math.h>void main(){ int a,d,n,i,nth; int sum=0; clrscr(); printf("Enter the first number of the series: "); scanf("%d",&a); printf("Enter the number of terms in series: "); scanf("%d",&n); printf("Enter the common difference of series: "); scanf("%d",&d); sum=(n*(2*a+(n-1)*d))/2; nth=a+(n-1)*d; printf("Sum of the A.P. is:\n"); for(i=a;i<=nth;i=i+d) { if(i!=nth) { printf("%d + ",i); } else { printf("%d = %d ",i,sum); } } getch();}

Output:

8


Q. WAP to convert decimal number to binary

#include<stdio.h>#include<conio.h>void binary(int x);void main(){ int a,b; clrscr(); printf("Enter the number\n"); scanf("%d",&a); printf("Number in Binary is:\t"); binary(a); getch();}void binary(int x){ int r; r=x%2; x=x/2; if(x==0) { printf("%d",r); } else { binary(x); printf("%d",r); }}

Output:

9


Q. WAP to multiply two matrices

#include<stdio.h>#include<conio.h>void main(){ int m,n,p,q,i,j,k,sum=0; int a[10][10],b[10][10],c[10][10]; clrscr(); printf("Enter the no. of rows and columns of matrix 1\n"); scanf("%d\n%d",&m,&n); printf("Enter the elements of first matrix\n"); for(i=0;i<m;i++) { for(j=0;j<n;j++) { scanf("%d",&a[i][j]); } } printf("Enter the no. of rows and columns of matrix 2\n"); scanf("%d\n%d",&p,&q); if(n!=p ) { printf("Matrices can not be multiplied.\n"); } else { printf("Enter the elements of second matrix\n"); } for(i=0;i<p;i++) { for(j=0;j<q;j++) { scanf("%d",&b[i][j]); } } clrscr(); printf("Matrix 1 is:\n"); for(i=0;i<m;i++) { for(j=0;j<n;j++) { printf("%d\t",a[i][j]);

10


} printf("\n"); } printf("Matrix 2 is:\n"); for(i=0;i<p;i++) { for(j=0;j<q;j++) { printf("%d\t",b[i][j]); } printf("\n"); } for(i=0;i<m;i++) { for(j=0;j<q;j++) { for(k=0;k<p;k++) { sum=sum+a[i][k]*b[k][j]; } c[i][j]=sum; sum=0; } } printf("Product of matrices:\n"); for(i=0;i<m;i++) { for(j=0;j<q;j++) { printf("%d\t",c[i][j]); } printf("\n"); } } getch();}

Output :

11


Q. WAP to find largest element in array

#include<stdio.h>#include<conio.h>#define MAX 20void main(){ int a[MAX]; int i,n,max=0; clrscr(); printf("Enter number of elements (max. 20)\n"); scanf("%d",&n); printf("Enter the values:\n"); for(i=0;i<n;i++) { scanf("%d",&a[i]); } max=a[0]; for(i=1;i<n;i++) { if(max<a[i]) max=a[i]; } printf("Maximum value in Array = %d",max); getch();}

Output :

12


Q. WAP to reverse a string using pointers

#include<stdio.h>#include<conio.h>char rev(char s[50],int ,int );void main(){ int i,l; char a[50],b[50]; clrscr(); printf("Enter the string\n"); gets(a); l=strlen(a); rev(a,0,l-1); printf("Reverse string is:"); puts(a); getch();}char rev(char *s,int beg,int end){ char p; if(beg>=end) { return 0; } else { p=*(s+beg); *(s+beg)=*(s+end); *(s+end)=p; return rev(s,++beg,--end); }}

Output:

13


Q. WAP to calculate area & volume of a cylinder

#include<stdio.h>#include<conio.h>#include<math.h>void main(){ float r,h; float sa,volume; clrscr(); printf("Enter radius and height of cylinder:\n"); scanf("%f\n%f",&r,&h); sa=2*(3.141)*r*(r+h); volume=(3.141)*r*r*h; printf("Surface area of cylinder is: %4f",sa); printf("\nVolume of cylinder is : %.4f",volume); getch();}

Output :

14


Q. WAP to count characters, lines, spaces & tabs in a file

#include<stdio.h>#include<conio.h>#include<stdlib.h>void main(){ FILE *fp; char a[20]; int nol=0,not=0,nob=0,noc=0; char c; clrscr(); printf("Enter the name of File:\n"); gets(a); if((fp=fopen(a,"r"))==NULL) { printf("File dosen't exist."); } else { while(1) { c=fgetc(fp); if(c==EOF) break; noc++; if(c==' ') nob++; if(c=='\n') nol++; if(c=='\t') not++; } } fclose(fp); printf("Number of characters = %d\n",noc); printf("Number of blanks = %d\n",nob); printf("Number of tabs = %d\n",not);

15


printf("Number of lines = %d\n",nol); getch();}

Output :

Q. WAP to merge 2 files in C

#include<stdio.h>#include<conio.h>#include<stdlib.h>void main(){ FILE *fs1,*fs2,*ft; char ch,file1[20],file2[20],file3[20]; clrscr(); printf("Enter name of first file\n"); gets(file1); printf("Enter name of second file\n"); gets(file2); printf("Enter name of file which'll store contents:\n"); gets(file3); fs1=fopen(file1,"r"); fs2 = fopen(file2,"r");

16


if(fs1==NULL || fs2==NULL ) { printf("Error opening file\n"); getch(); exit(1); } ft=fopen(file3,"w"); if(ft==NULL ) { printf("Error opening file\n"); exit(1); } while((ch=fgetc(fs1))!=EOF) fputc(ch,ft); while((ch=fgetc(fs2))!=EOF) fputc(ch,ft); printf("Two files were merged into %s file \n",file3); fclose(fs1); fclose(fs2); fclose(ft); getch();}

Output :

17


Q. C program to use structure within union & display the contents of structure elements

#include<stdio.h>#include<conio.h> void main() { struct student { char name[30]; char sex; int rollno; float percentage; }; union details { struct student st; }; union details set; printf("Enter details:"); printf("\nEnter name : "); scanf("%s", set.st.name); printf("\nEnter roll no : "); scanf("%d", &set.st.rollno); flushall(); printf("\nEnter sex : "); scanf("%c", &set.st.sex); printf("\nEnter percentage :"); scanf("%f", &set.st.percentage); printf("\nThe student details are : \n"); printf("\name : %s", set.st.name); printf("\nRollno : %d", set.st.rollno); printf("\nSex : %c", set.st.sex); printf("\nPercentage : %f", set.st.percentage); getch();}

18


Output :

Enter details:Enter name : PriteshEnter rollno: 10Enter sex: MEnter percentage: 89 The student details are:Name : PriteshRollno : 10Sex : MPercentage : 89.000000

Q.

19

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