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DEVELOPING PROGRAMS USING ALGORITHMS AND FLOW CHARTS AND VICE VERSA
Week 14
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FLOW CHART
A flowchart is a type of diagram that represents an algorithm or process, showing the steps as boxes of various kinds, and their order by connecting them with arrows. This diagrammatic representation solution to a given problem.
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SYMBOLS FOR FLOW CHART
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Algorithm Flow chartM
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•step 1 : start•step 2 : input number•step 3 : rem=number mod 2•step 4 : if rem=0 then print "number even“ else print "number odd" endif•step 5 : stop
to be done by student
Q) find out number is odd or even?
Algorithm Flow chartM
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Step 1: Start Step 2: Declare variables num1, num2 and sum. Step 3: Read values num1 and num2. Step 4: Add num1 and num2 and assign the result to sum. sum←num1+num2 Step 5: Display sum Step 6: Stop
to be done by student
Q) add two numbers entered by user.
Algorithm Flow chartM
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•Step 1: Start •Step 2: Declare variables n,i,flag. •Step 3: Initialize variables flag←1 i←2 •Step 4: Read n from user. •Step 5: Repeat the steps until i<(n/2) 5.1 If remainder of n÷i equals 0 flag←0 Go to step 6 5.2 i←i+1 •Step 6: If flag=0 Display n is not prime else Display n is prime •Step 7: Stop
to be done by student
Q)check whether a number entered by user is prime or not.
Algorithm Flow chartM
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Step 1: Start Step 2: Declare variables a,b and c. Step 3: Read variables a,b and c. Step 4: If a>b If a>c Display a is the largest number. Else Display c is the largest number. Else If b>c Display b is the largest number. Else Display c is the greatest number. Step 5: Stop
to be done by student
Q) find the largest among three different numbers entered by user.
C LANGUAGE
• The C programming language was designed by Dennis Ritchie at Bell Laboratories in the early 1970s
• A “C” development environment includes – System libraries and headers: a set of
standard libraries and their header files. For example see /usr/include and glibc.
– Application Source: application source and header files
– Compiler: converts source to object code for a specific platform
– Linker: resolves external references and produces the executable module
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EXECUTION PROCESS FOR C LANGUAGE PROGRAM
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STEPS TO WRITE BASIC C LANGUAGE PROGRAM AND EXECUTE USING BLOODSHED C++ EDITOR
• Click start• Click all programs• Click bloodshed c++ editor• Click file• Select new• Write c language code/program• Save program/code• compile program using ctrl + f9 key and
execute using ctrl + f10 key.
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SCREEN SHOT(DEV C++)
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C PROGRAMSQ) Write a c program for addition of two numbers.
#include<stdio.h> int main() { int a, b, c; printf("Enter two numbers to add\n");
scanf("%d%d",&a,&b); c = a + b; printf("Sum of entered numbers = %d\n",c); return 0; }
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C PROGRAM TO CHECK ODD OR EVEN USING MODULUS OPERATOR#include<stdio.h> main() { int n; printf("Enter an integer\n"); scanf("%d",&n); if ( n%2 == 0 ) printf("Even\n"); else printf("Odd\n"); return 0; }
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PALINDROME NUMBER ALGORITHM#include <stdio.h>
int main() {
int n, reverse = 0, temp;
printf("Enter a number to check if it is a palindrome or not\n");
scanf("%d",&n);
temp = n;
while( temp != 0 ) {
reverse = reverse * 10;
reverse = reverse + temp%10;
temp = temp/10;
}
if ( n == reverse )
printf("%d is a palindrome number.\n", n);
Else
printf("%d is not a palindrome number.\n", n);
return 0;
}
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SESSION 14 END
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