C ++ fstream I / O. [英] C++ fstream I/O

问题描述

我正在尝试将当前行和文件的下一行存储到字符串中以进行它们之间的比较。但是，我不能也不知道如何将文件中的下一行放入字符串next_line。有什么建议？谢谢。

I am trying to store the current line and the next line of a file into strings to do comparisons between them. However, I can''t and don''t know how to get the next line from the file into the string next_line. Any suggestions? Thanks.

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推荐答案

你可以重复一遍代码

can you just repeat the code

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不行，因为它打印出相同的行。

No that doesn''t work because it prints out the same line.

只需使用带有字符串对象的getline：


int main（）

{

string line，cur_line，next_line ;

ifstream INFILE（" input.txt"）;


getline（INFILE，cur_line）;

getline（INFILE ，next_line）;


cout<< cur_line<< ''\ n''<< next_line<< endl;


返回0;

}

Just use the getline with string objects:

int main()
{
string line, cur_line, next_line ;
ifstream INFILE("input.txt");

getline(INFILE, cur_line);
getline(INFILE, next_line);

cout << cur_line << ''\n'' << next_line << endl;

return 0;
}

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