A Collection of Code Snippets in as Many Programming Languages as Possible
This project is maintained by TheRenegadeCoder
Welcome to the Factorial in C++ page! Here, you'll find the source code for this program as well as a description of how the program works.
#include <iostream>
#include <cstdlib>
using namespace std;
int main(int argc, char *argv[])
{
if (argc < 2 || std::string(argv[1]) == "")
{
cout << "Usage: please input a non-negative integer" << endl;
return 1;
}
int n = atoi(argv[1]);
if (n == 0 && std::string(argv[1]) != "0")
{
cout << "Usage: please input a non-negative integer" << endl;
return 1;
}
if (n < 0)
{
cout << "Usage: please input a non-negative integer" << endl;
return 1;
}
int i, fact = 1;
for (i = 1; i <= n; i++)
{
fact = fact * i;
}
cout << fact << endl;
return 0;
}
Factorial in C++ was written by:
If you see anything you'd like to change or update, please consider contributing.
Note: The solution shown above is the current solution in the Sample Programs repository as of Oct 10 2022 16:05:09. The solution was first committed on Oct 09 2019 11:12:44. As a result, documentation below may be outdated.
No 'How to Implement the Solution' section available. Please consider contributing.
No 'How to Run the Solution' section available. Please consider contributing.