std :: getline输入在C ++中无法正常工作 [英] std::getline input not working properly in C++

问题描述

可能重复:
需要getline()帮助
getline是否不要求输入?

Possible Duplicate:
Need help with getline()
getline not asking for input?

我正在处理以下代码:

int main()
{
    int num;
    string str;
    cin>>num;
    int points[num][2];
    for(int i=0;i<num;i++)
    {
        cout<<"\nPoint"<<i<<":";
        getline (cin,str);
        points[i][0]=atoi(&str[0]);
        points[i][1]=atoi(&str[2]);
    }

    for(int i=0;i<num;i++)
    {
        cout<<"\npoint"<<i<<" = "<<points[i][0]<<" "<<points[i][1];
    }

我得到的上述代码的问题是，当我输入num值作为某个整数，然后按Enter键而不是打印时...

The problem with the above code that I am getting is when I enter the num value as some integer and then press enter, instead of printing...

点0:"

...，等我输入时，将打印"Point 0:"和"Point 1:"，然后输入Point 1的输入.

...and waiting for me to enter it prints "Point 0:" and "Point 1:" and then takes the input for Point 1.

对于点0，它会自动将输入设为0和0.

For point 0 it automatically takes input as 0 and 0.

推荐答案

下面是约翰·卫斯理王子的回复，请尝试

Following on from Prince John Wesley's reply, try

    cin >> num >> endl;

先刷新流缓冲区，然后再使用它.

to flush the stream buffer before using it again.

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