C语言 如何在文本文件中添加新行？
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How to add a new line in a text file?
提问by ken
I have a few lines of code:
我有几行代码：
strcat(myTxt,"data");
strcat(myTxt,"\n");
strcat(myTxt,"data1");
In between the lines I've done strcatof "\n"; however, when I do a write to a text file the "\n"is ignored and all the strings are concatenated as datadata1. How can I work around this issue?
在我所做strcat的两行之间"\n"；但是，当我写入文本文件时，该文件将"\n"被忽略，所有字符串都连接为datadata1. 我该如何解决这个问题？
采纳答案by Daniel
For file output, you should do strcat of "\r\n"
对于文件输出，你应该做 strcat of "\r\n"
回答by Dacav
This code works for me:
这段代码对我有用：
#include <string.h>
#include <stdio.h>
int main ()
{
char myTxt[100];
myTxt[0] = 0;
strcat(myTxt, "data");
strcat(myTxt, "\n");
strcat(myTxt, "data1");
printf("%s\n", myTxt);
return 0;
}
Did you initialize the buffer's first byte? Edit: works also with a file as output:
您是否初始化了缓冲区的第一个字节？编辑：也适用于文件作为输出：
#include <string.h>
#include <stdio.h>
int main ()
{
char myTxt[100];
FILE *out = fopen("out.txt", "wt");
myTxt[0] = 0;
strcat(myTxt, "data");
strcat(myTxt, "\n");
strcat(myTxt, "data1");
fprintf(out, "%s\n", myTxt);
fclose(out);
return 0;
}
