Example: Greatest of Three Numbers in C using Nested If-else

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// Greatest of Three Numbers in C using Nested If-else
#include <stdio.h>

// It's the main function of the program
int main()
{
    int num1, num2, num3;

    // Step-1 Enter three integer values
    printf("INPUT-1: ");
    scanf("%d", &num1);

    printf("INPUT-2: ");
    scanf("%d", &num2);

    printf("INPUT-3: ");
    scanf("%d", &num3);

    // Step-2 Check if num1 is greater than both num2 and num3, num1 is the greatest
    if (num1 >= num2 && num1 >= num3)
    {
        printf("\nGreatest Number :: %d", num1);
    }
    else
    {
        // Step-3 Check if num2 is greater than both num1 and num3, num2 is the greatest
        if (num2 >= num1 && num2 >= num3)
        {
            printf("\nGreatest Number :: %d", num2);
        }
        // Step-4 If above both conditions are false then, num3 is the greatest
        else
        {
            printf("\nGreatest Number :: %d", num3);
        }
    }

    return 0;
}