factorial example in c programming

1#include<stdio.h>
2int main(){
3  int i,f=1,num;
4 
5  printf("Enter a number: ");
6  scanf("%d",&num);
7 
8  for(i=1;i<=num;i++)
9      f=f*i;
10 
11  printf("Factorial of %d is: %d",num,f);
12  return 0;
13}

1//Factorial of a given number
2#include <stdio.h>
3
4//This function returns factorial of the number passed to it 
5long int factorialOf(int number){
6    long int factorial = 1;
7    while(number){
8        factorial*=number;
9        number-=1;
10    }
11    return factorial;
12}
13
14int main(void) {
15	int n;
16	printf("Find factorial of \n");
17	scanf("%d",&n);
18	printf("\nThe factorial of %d is %ld",n,factorialOf(n));
19	return 0;
20}

1#include <stdio.h>
2 
3int main()
4{
5  int i, num, fact = 1;
6 
7  printf("Enter Number to Calculate Factorial: \n");
8  scanf("%d", &num);
9  
10  for (i = 1; i <= num; i++){
11      fact = fact * i;
12  }
13    
14  printf("Factorial of %d = %d\n", num, fact);
15 
16  return 0;
17}