小编Kyl*_*e A的帖子

为什么num1价值等于0？我不明白.怎么会传递num1到getScore功能,并使用cin不改变价值？如何更改基于什么是它的价值cin来score.

#include <iostream>
using namespace std;

void getScore(double);

int main(int argc, const char * argv[]) {
    double num1;
    getScore(num1);
    cout << "NUM 1 got set to " << num1 << endl;
    return 0;
}

void getScore(double score) {
    cout << "whats the score";
    cin >> score;
    cout << "num is " << score << endl;
}