C Programs

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Decision Making Programs in C

Find the largest of two numbers

Introduction

In programming, comparing numbers is a common task.
To find the largest of two numbers, we use a simple if-else decision:

• If num1 > num2 → num1 is largest
• Else if num1 < num2 → num2 is largest
• Else → Both numbers are equal

C Program: Find the largest of two numbers

#include <stdio.h>
 
int main() {
    int num1, num2;
 
    // Input two numbers
    printf("Enter first number: ");
    scanf("%d", &num1);
    printf("Enter second number: ");
    scanf("%d", &num2);
 
    // Compare numbers
    if (num1 > num2) {
        printf("%d is the largest number.\n", num1);
    } else if (num2 > num1) {
        printf("%d is the largest number.\n", num2);
    } else {
        printf("Both numbers are equal.\n");
    }
 
    return 0;
}
    

 

 
OUTPUT 1 :
Enter first number: 25
Enter second number: 30
30 is the largest number.

OUTPUT 2 :
Enter first number: 50
Enter second number: 50
Both numbers are equal.

Explanation

1. User inputs two numbers.
2. Program uses if-else to compare them:
   • num1 > num2 → print num1
   • num2 > num1 → print num2
   • Otherwise → print “Both numbers are equal.”