Language: \"C programming\" please read it carefully and make sure the code is r

Question

Language: "C programming"

please read it carefully and make sure the code is running by doing what's inside the sample output.

thanks,

1. Factorial (fact.c) The factorial of a positive integer is defined as n! nn -1n 2.1 and by definition 0! Write a program that prompts the user to enter an integer number and uses a function, factorial, described below, to calculate the factorial of that number. Implement this function: long factorial(int n) Sample Output: Number to calculate for: 5 5!120 Data Type Requirement: Input data for the factorial function is of type int, output is of type long. Input Validation: Input value must be greater than equal to 0

Explanation / Answer

//fact.c

#include<stdio.h>

long factorial(int n)

{

if(n==0 && n==1)

return 1;

int i;

long m=1;

for(i=2;i<=n;i++)

m=m*i;

return m;

}

int main()

{

int n;

printf("Number to calculate for: ");

scanf("%d",&n);

while(n<0)

{

printf("Wrong Input! Enter a number greater than or equal to 0 ");

scanf("%d",&n);

}

long ans=factorial(n);

/* if(n>12)

{

printf("Overflow ");

}

*/

//long can't store correct values above 12!

printf("%d! = %ld",n,ans);

return 0;

}

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