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【基本C++】階乗のプログラム

Posted at

はじめに

基本だけ一応記載。

ソースコード

facctorial.cpp
# include<iostream>

using namespace std;

int facctorialMethod(int k);

int main(){
	int number;
	cout<<"何の階乗を計算しますか?"<<endl;
	cin>>number;
	cout<<facctorialMethod(number)<<endl;
}

int facctorialMethod(int k){
	int sum = 1;
	for (int i = 1; i <= k; ++i)
	{
		sum *= i;
	}
	return sum;
}
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