打印到文件问题 [英] print to file question

问题描述

愚蠢的问题，我知道，但我有一个代码片段，如下所示：


printf（" blah blah"）;

printf （更多等等）;


x = a + b - c;

printf（$％3.2f \ n"，x）;


y = d + e;

printf（$％3.2f \ n，y）;


printf （stuff）;

而不是打印到DOS窗口（就像现在一样），我想要输出打印到文件的
以便然后，文件可以由收据打印机打印为

收据。并不是真的很重要，但是这一切都是在XP Pro上的。 -Phil

Silly question, I know, but I have a code snippet that looks like this:

printf("blah blah");
printf("more blah");

x = a + b - c;
printf($%3.2f\n", x);

y = d + e;
printf($%3.2f\n, y);

printf("stuff");
and instead of it printing to the DOS window (as it does now), I want
the output to print to a file so that the file may then be printed as a
receipt by a receipt printer. Not that it really matters, but this is
all on XP Pro. -Phil

推荐答案

％3.2f\ n"，x）;


y = d + e;

printf（

%3.2f\n", x);

y = d + e;
printf(

％3.2f \ n，y）;


printf（ stuff）;

而不是它打印到DOS窗口（就像现在一样），我希望

输出打印到文件中，以便然后，文件可以由收据打印机打印为

收据。并不是真的很重要，但是这一切都是在XP Pro上的。 -Phil

%3.2f\n, y);

printf("stuff");
and instead of it printing to the DOS window (as it does now), I want
the output to print to a file so that the file may then be printed as a
receipt by a receipt printer. Not that it really matters, but this is
all on XP Pro. -Phil

而不是打印到DOS窗口（就像现在一样），我想要

and instead of it printing to the DOS window (as it does now), I want

要打印到文件的输出，以便文件可以打印为收据打印机的收据。

the output to print to a file so that the file may then be printed as
a receipt by a receipt printer.

使用DOS命令

程序文件名


或者如果你想解决它C，使用

FILE * f = fopen（" filename"，" w"）;

if（f == NULL）{ERROR ...}

fprintf（f，" format string"，arguments ...）;

if（fclose（f）！= 0）{ERROR ...; }


-

Hallvard

Use the DOS command
program filename

Or if you want to solve it in C, use
FILE *f = fopen("filename", "w");
if (f == NULL) { ERROR... }
fprintf(f, "format string", arguments...);
if (fclose(f) != 0) { ERROR...; }

--
Hallvard

这篇关于打印到文件问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！