Example: Greatest of Three Numbers in C using Switch Case

// Greatest of Three Numbers in C using Switch Case
#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);

    int largest = num1;

    // Step-2 Compare num2 & num3 to find the largest
    switch ((num1 > num2) * 1 + (num1 > num3) * 2 + (num2 > num3) * 4)
    {
    case 0:
        largest = num2 > num3 ? num2 : num3; // Choose the larger of num2 or num3
        break;
    case 1: // num1 is greater than num2 and num3
        largest = num1;
        break;
    case 2: // num1 is greater than num3 but less than num2
        largest = num2;
        break;
    case 3: // num1 is greater than num2, num2 is greater than num3
        largest = num1;
        break;
    case 4: // num1 is less than num2, num1 is greater than num3
        largest = num3;
        break;
    case 5: // num1 is greater than num3, num2 is greater than num3
        largest = num2;
        break;
    case 6: // num2 is greater than num1, num2 is greater than num3
        largest = num2;
        break;
    case 7: // num2 is greater than num1 and num3
        largest = num2;
        break;
    }

    // Step-3 Final output of the program
    printf("\nGreatest Number :: %d", largest);

    return 0;
}