Compare two integers in C


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Comparing two integer variables is one of the simplest program you can write at ease. In this program, you can either take input from user using scanf() function or statically define in the program itself.

We expect it to be a simple program for you as well. We are just comparing two integer variables. We shall first look the algorithm, then its flow diagram followed by pseudocode and implementation.

Algorithm

Let's first see what should be the step-by-step procedure to compare two integers−

START
   Step 1 → Take two integer variables, say A & B
   Step 2 → Assign values to variables
   Step 3 → Compare variables if A is greater than B
   Step 4 → If true print A is greater than B
   Step 5 → If false print A is not greater than B
STOP

Flow Diagram

We can draw a flow diagram for this program as given below −

integer comparison

Pseudocode

Let's now see the pseudocode of this algorithm −

procedure compare(A, B)

   IF A is greater than B
      DISPLAY "A is greater than B"
   ELSE
      DISPLAY "A is not greater than B"
   END IF

end procedure

Implementation

Now, we shall see the actual implementation of the program −

#include <stdio.h>

int main() {
   int a, b;

   a = 11;
   b = 99;

   // to take values from user input uncomment the below lines −
   // printf("Enter value for A :");
   // scanf("%d", &a);
   // printf("Enter value for B :");
   // scanf("%d", &b);

   if(a > b)
      printf("a is greater than b");
   else
      printf("a is not greater than b");

   return 0;
}

Output

Output of this program should be −

a is not greater than b
simple_programs_in_c.htm
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