Question

How to find NCR factorial of a number in C++

Answer 1

#include <iostream>

int factorial(int n) {
    return (n==1 || n==0) ? 1 : n * factorial(n - 1);
}
 
int main(void) {
    int n = 7, r = 3;
  
    int ncr = factorial(n) / (factorial(r) * factorial(n - r));
     
    std::cout << ncr;
  
    return 0;
}
 
 
 
 
/*
run:
 
35
 
*/

 

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