如何分配char指针和cin？ [英] How do I assign a char pointer with cin?

问题描述

所以基本上当我尝试这样做

So basically when I try to do this

char* inputFileName;
cout<<  "Filename: "; cin>>*inputFileName;

它可以让我输入文件名，但是当我按enter键得到一个未处理的异常错误。有任何想法吗？

it lets me input the filename but when I press enter I get an unhandled exception error. Any ideas?

也可以编辑。

char* inputFileName;
cout<<  "Filename: "; cin>>inputFileName;

我尝试运行时调试声明失败。

i get a debug asseration failed when i try to run it.

推荐答案

您需要传入指针，而不是引用指针，并为char *分配内存。

You need to pass in the pointer, not the dereferenced pointer, and have allocated memory for the char *

#include <iostream>
using namespace std;

int main(){
    char inputFileName[1024];
    cout << "Filename: ";
    cin >> inputFileName;
    cout << inputFileName << endl;
}

char inputFileName [1024] / code>是

Another option besides char inputFileName[1024]; is

char *inputFileName; 
inputFileName = new char[BUFFER_SIZE];

BUFFER_SIZE当然和以后定义

with BUFFER_SIZE defined somewhere of course, and later

delete [] inputFileName;

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