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C program to find greatest of three numbers using function.

In this c program we will learn how to find greatest of three number using function in c programming language?

Here is a function largestNumber which will take three integer arguments and returns greatest number from them.

C program - find greatest of three numbers using function

Let’s consider the following program

/*C program to find greatest of three numbers using function*/

#include <stdio.h>

/*function to get largest among three numbers*/

int largestNumber(int a,int b, int c)
{
	int largest=0;
	if(a>b && a>c)
		largest=a;
	else if(b>a && b>c)
		largest=b;
	else
		largest=c;
	return largest;
}

int main()
{
	int a,b,c;
	
	printf("Enter three numbers: ");
	scanf("%d%d%d",&a,&b,&c);
	printf("Largest number is: %d\n",largestNumber(a,b,c));
	
	return 0;
}

Output

    Enter three numbers: 10 20 11 
    Largest number is: 20