Outputting to a file from multiple functions

Asked Jun 17 '20 at 12:26

Active Jun 17 '20 at 12:26

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I'm using

std::ofstream cout(output_path);

to output text to a file. If I try to use this call in both my main function and a separate function, the previous text data is erased from the file with each call. Is there a way to ensure that changes I make to the text file between calls are kept?

asked Jun 17 '20 at 12:26

mooglin

2

Don't keep opening the file, pass a reference to the opened file from main() to your function. – drescherjm Jun 17 '20 at 12:30
Create exactly one `ofstream` object and pass it (by reference) between functions, or make it global. – n. 1.8e9-where's-my-share m. Jun 17 '20 at 12:30
^ Or that. Opening and closing file handle repeatedly is an expensive operation – Yksisarvinen Jun 17 '20 at 12:30

Outputting to a file from multiple functions

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