22. write a C program to find the factorial of a number using functions

Program to find the factorial of a number using functions 

Source Code:

#include<stdio.h>

void function(int number)

{

int i,fact=1;

i=1;

while(i<=number)

{

fact=fact*i;

i++;

}

printf("factorial of %d is:%d",number,fact);

}

int main()

{ 

int n;

printf("Enter n Value:\n");

scanf("%d",&n);

function(n);

return 0;

}

Output:

Enter n Value:
7
factorial of 7 is:5040