C Program to find the largest among three variables using nested if.

I have used DEV-C++ compiler for debugging purpose. But you can use any C programming language compiler as per your availability

#include <stdio.h>
int main()
{
    int num1, num2, num3;
    printf("Enter three numbers: \n");
    
    scanf("%d %d %d", &num1, &num2, &num3);
    if(num1 >= num2)    
    {
        if(num1 >= num3)
            printf("%d is the largest number", num1);
        else
            printf("%d is the largest number", num3);
    }
    
    else if(num2 >= num3)
        printf("%d is the largest number", num2);
        
    else
        printf("%d is the largest number", num3);
        
    return 0; 
}

Result:

Enter three numbers: 

80

90

60

90 is the largest number