C++ factorial

#include <cmath>

int fact(int n){
    return std::tgamma(n + 1);  
}    
// for n = 5 -> 5 * 4 * 3 * 2 = 120 
//tgamma performas factorial with n - 1 -> hence we use n + 1

Built in factorial function in c++

int factorial(int n)
{
  return (n == 1 || n == 0) ? 1 : factorial(n - 1) * n;
}

Source: cplusplus.com

Similar codes

2 votes273 views1 answer
++x vs x++
C++
1 vote228 views1 answer
Print linkedstack cpp
C++
0 vote241 views1 answer
Static cast char c++
C++
0 vote237 views1 answer
How to take full sentence in c++
C++
0 vote258 views1 answer
How to type cast quotient of two integers to double with c++
C++
0 vote258 views1 answer
C++ asio read full socket data into buffer
C++
0 vote262 views1 answer
PUBG_APIKEY=<your-api-key> npm t
C++
0 vote219 views1 answer
Count bit 1 c++
C++
0 vote235 views1 answer
C++ recorrer string
C++
11 votes240 views3 answers
Get ascii value of string in C++
C++