在调试时查看文件输出 [英] view file output while debugging

问题描述

在调试模式下将输出重定向到文件的问题是，在程序完成之前，我无法查看文件的内容（大小为零）。有这个用法：

  FILE * f; 
 f = fopen（log.txt，w）; 
 fprintf（f，cycle =％d\\\
，c）; 
  

当我正在调试时，我想在步进后立即查看文件cycle =输出fprintf语句。

有什么办法吗？

解决方案>

您可以尝试在 fprintf（）函数调用后放入 fflush（f）; 数据将立即写入。

The problem with redirecting the output to a file in debug mode is that I can not view the content of file (size is zero) until the program finish. With this usages:

FILE *f;
f = fopen("log.txt", "w");
fprintf(f, "cycle =%d\n", c);

while I am debugging, I want to view the track "cycle =" in the file right after stepping out "fprintf" statement.

Is there any way to do that?

解决方案

You can try to put fflush(f); after fprintf() function call, which will make the data be written immediately.

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