Question

编程计算X的N次方，要求用递归函数。别用太多的库函数，没学，急等，跪求，新人求助！！1

Answer 1

#include <iostream>
using namespace std;

int mul(int x, int N){
if (N == 0) return 1;
else if (N == 1) return x;
else{
int y = x * mul(x, N-1);
cout << "y = " << y << endl;
return y;
}
}

int main (){
cout << mul(3,4) << endl;
system("pause");
return 0;

}