C program to calculate factorial of given number.

#include<stdio.h>

#include<conio.h>

void main(){

int n,i,fact=1;

printf("Enter a positive integer number\n");

scanf("%d",&n);

if (n>0) {

for (i=1;i<=n;i++) fact=fact*i;

printf("factorial of %d=%d\n",n,fact);

}

else printf("wrong input\n");

getch();

}