ifstream不打开文件 [英] ifstream not opening file

问题描述

在此函数中，我试图打开一个文件，其中包含一组字符，我想分配给我的矩阵数组，但每当我运行这个程序，控制台显示一个错误，说，该文件是不是打开。另一个问题，如果我将该文件添加到我的资源文件夹如何指定访问该文件，而不是我在我的硬盘驱动器的根目录？

In this function i am trying to open a file that contains a set of characters that i want to assign to my matrix array, however whenever i run this program the console displays an error that says that the file is not open. Another question, if i add that file to my resource folder how do i specify to access that file and not the one that i have in the root of my hard drive?

ifstream readSecondMap("C:\\map_2.txt", ifstream::in);

void Stage::populateStage(ifstream &myStage, char (&myArray)[mapXcor][mapYcor]) {
    if(myStage.is_open()){
        for(int a = 0; a < mapXcor+1; ++a){
            for(int b = 0; b < mapYcor+1; ++b){
                myArray[a][b] = (char) myStage.get();
            }
        }
        myStage.close();        
    } else {
        std::cout << "Error: Unable to open File" <<std::endl;
    }
}

推荐答案

as @TianyunLing注：

Just as @TianyunLing noted:

我在KUbuntu 12.10上测试过：

I've tested on KUbuntu 12.10:

1. 打开错误：如果 map_2.txt 不存在，将会发生错误。


2. 文件路径：

1. Open error: if map_2.txt does not exist, the error will occur.
2. File path:

文件夹1

+ ------- file1

+ ----- - file2

folder2

+ ------- program

+ ------- file3

为您的程序访问file1，使用../ folder1 / file1，访问file3，使用 file3 。 （假设您不改变程序工作目录）

for your program to visit file1, use "../folder1/file1", to visit "file3", use file3. (suppose that you don't change your program working directory)

一更多事情，你不需要为 ifstream 指定 ifstream :: in 。

One more thing, you don't need to specify ifstream::in for ifstream.

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