关于流的问题 [英] Question on ofstream
问题描述
关于c ++ ofstream的快速提问。在我的主要我把它声明为int main（int arg，char * argv []）。所以当我运行以下命令./program.cpp test.txt时，它将运行我的程序并将test.txt文件传递给它。我的问题是如何保存我的输出文件作为我传入的文件名。我知道使用ofstream但我不知道如何传入我传入我的程序测试的文件。我有以下代码。任何帮助都会很棒。谢谢
ofstream myfile（""，ios :: out）;
Quick question on c++ ofstream. in my main i have it declared as int main(int arg, char*argv[]). so that when i run the following command ./program.cpp test.txt it will run my program and pass the test.txt file into it. My question is how do i save my output file as the file name i passed in. i know to use ofstream but im not sure how to pass in the file i passed into my program to test. I have the following code.any help would be great. thanks
ofstream myfile(" ", ios::out);
推荐答案
文件名将保存在String argv [1] ，所以只需将它作为你给你的ofstream的文件名。
问候，
Nepomuk
The filename will be saved in the String argv[1], so just use that as the filename you give to your ofstream.
Greetings,
Nepomuk
好吧我想我理解这个概念。我只是不确定我编码是否正确..这是我试图实现它...但它不起作用..
int main（int arg ，char * argv []）{
string fname = argv [1];
ofstream myfile（fname，ios :: out）;
ok i think i understand that concept. Im just not sure if im coding it right.. here is how i have tried to implement it..but it doesn not work..
int main(int arg, char *argv[]){
string fname= argv[1];
ofstream myfile( fname, ios::out);
你不能使用字符串对象作为参数。
要么这样做：
You cannot use a string object as the argument.
Either do this:
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