C Program To Find Biggest of Three Numbers using Function

In this video tutorial you’ll learn how to find biggest of three integer numbers using function.

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Video Tutorial: C Program To Find Biggest of Three Numbers using Function

Source Code: C Program To Find Biggest of Three Numbers using Function

#include<stdio.h>

int biggest(int, int, int); // function prototype

int main()
{
    int a, b, c;

    printf("Enter 3 integer numbers\n");
    scanf("%d%d%d", &a, &b, &c);

    //function call biggest(a, b, c)
    printf("Biggest of %d, %d and %d is %d\n", a, b, c, biggest(a, b, c));

    return 0;
}

// function definition
int biggest(int x, int y, int z)
{
    if(x > y && x > z)
    {
       return x;
    }
    else
    {
       if(y > z)
          return y;
       else
          return z;
    }
}

Output
Enter 3 integer numbers
50
40
60
Biggest of 50, 40 and 60 is 60

Source Code: C Program To Find Biggest of Three Numbers using Function, Using Ternary Operator

#include<stdio.h>

int biggest(int, int, int); // function prototype

int main()
{
    int a, b, c;

    printf("Enter 3 integer numbers\n");
    scanf("%d%d%d", &a, &b, &c);

    //function call biggest(a, b, c)
    printf("Biggest of %d, %d and %d is %d\n", a, b, c, biggest(a, b, c));

    return 0;
}

// function definition
int biggest(int x, int y, int z)
{
   return( (x>y && x>z)?x:(y>z)?y:z );
}

Logic To Find Biggest of 3 Numbers using Function

We ask the user to enter 3 integer numbers. We pass those 3 integer numbers to user defined function biggest. Inside function biggest we use ternary operator to determine the biggest of those 3 numbers. Function biggest returns the biggest of the 3 numbers back to the calling method/function – in above progam its main() method.

Note: Function biggest returns integer type data. And it takes 3 arguments of type integer. We’re calling function biggest from inside printf() function.

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