在C：在单行文本文件阅读时分配变量 [英] In C: assigning variables when reading in a one-line text file

问题描述

我是编程新手。我一直在学习C，Fortran语言和Perl着急。我创建包含的表面情节网页的目标。我能够让我的程序通信完成这件事，但有我的变量在我的C程序中的分配问题。

I'm a beginning programmer. I've been learning C, Fortran, and Perl in a hurry. I have a goal of creating a webpage containing a surface plot. I am able to make my programs communicate to get this done, but have a problem with the assignment of my variables in my C program.

从我的Perl程序，我得到一个文本文件， data.in 只包含一行。

From my Perl program, I get a text file, data.in which only contains one line.

例如： cosxtsiny 50 0.5 3 0 6 。这是我做了什么：

For example: cosxtsiny 50 0.5 3 0 6. This is what I've done:

（声明我的变量字符， INT 或双击）

FILE *fi

fi = open("data.in", "r");
fscanf(fi, "%s %d %f %f %f %f", &func, &PTS, &xxa, &xxb, &yyc, &yyd);

close(fi);

我应该产生一个文件， data.out ，与价值观，我从获得 data.in 一旦我做一些计算它。这些将在以后产生曲面图我。

I'm supposed to produce a file, data.out, with the values I get from data.in once I do some calculations with it. These will later produce the surface plot for me.

下面是我的问题：我得到与gridpionts（PTS）的正确数量的表面图，所以我知道前两个任务是对的，但我的轴处于关闭状态。当我看到我的 data.out ，我的轴不开始和结束，他们都应该。有什么建议？

Here is my problem: I do get a surface plot with the correct amount of gridpionts (PTS) so I know the first two assignments are right, but my axes are off. When I see my data.out, my axes don't start and end where they are supposed to. Any suggestions?

推荐答案

我想如果你在声明 FUNC 作为一个字符数组，那么你应该写类似的fscanf（FI，％S，FUNC）而不是中的fscanf（FI，％S，＆安培; FUNC）

I guess if you are declaring func as a character array, then you should write something like fscanf(fi, "%s", func) instead of fscanf(fi,"%s", &func).

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