combination in c++

NAMSO answered on June 9, 2022 Popularity 10/10 Helpfulness 3/10

answer combination in c++

related combination code c++

combination in c++

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#include <iostream>
using namespace std;
// Input a,b
// Output Combination a!/b!(a-b)!
	int fac(int x){
	int s=1;
	for(int i=x;i>0;i--){
		s*=i;
	}
	return s;
	}
	int con (int x,int y){
	int c;
	c=fac(x)/(fac(y)*fac(x-y));
	return c;
	}
	int main(){
	int a,b;
	cout<<"Enter the first number : ";
	cin >> a;
	cout<<"Enter the second number : ";
	cin >> b;
	cout<<"The conbination of these number : ";
	cout<<con(a,b);
	return 0;
	}

Popularity 10/10 Helpfulness 3/10 Language cpp

Source: Grepper

Tags: c++ function

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Contributed on Aug 11 2022

NAMSO

0 Answers Avg Quality 2/10

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combination code c++

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// CPP program To calculate The Value Of nCr
#include <bits/stdc++.h>
using namespace std;
 
int fact(int n);
 
int nCr(int n, int r)
{
    return fact(n) / (fact(r) * fact(n - r));
}
 
// Returns factorial of n
int fact(int n)
{
    int res = 1;
    for (int i = 2; i <= n; i++)
        res = res * i;
    return res;
}
 
// Driver code
int main()
{
    int n = 5, r = 3;
    cout << nCr(n, r);
    return 0;
}

Popularity 9/10 Helpfulness 6/10 Language cpp

Source: www.geeksforgeeks.org

Tags: c++

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