Simple C program - help needed
I have a C++ snippet:
#include <stdio.h>
#include <string.h>
int main(int argc, char *argv[])
{
char s[2048];
while (fgets(s, sizeof(s), stdin))
{
char *pos = strpbrk(s, ">\r\n");
if (pos != 0)
{
char *end = strrchr( pos, '<' );
if ( end )
*end = '\0';
fputs(pos+1, stdout);
}
return 0;
}
}
Although when tri开发者_如何学JAVAmming a text file using it, it works with only 1 line e.g. it trims 1 line only.
If I try to trim multiple lines e.g. file with 30 lines in it, it only trims one line still. I am pretty confused, any help would be appreciated.
Example text file:
report2011510222820.html: <td width="60%" bgcolor="#ffffff" class="tablebody" valign="top">C:\Users\Admin\mon.bat</td>
report2011510222820.html: <td width="60%" bgcolor="#ffffff" class="tablebody" valign="top">C:\test123.bat</td>
Output:
C:\Users\Admin\mon.bat
Expected Output:
C:\Users\Admin\mon.bat
C:\test123.bat
Your return 0;
is inside the while()
loop so it will always exit after the first run through the loop. You have to move it outside.
To add a line break, replace
if ( end )
*end = '\0';
with
if ( end )
{
*end = '\n';
*(end + 1) = '\0';
}
Try putting return 0;` out the the while loop
Yout return is inside the "while" loop the end of your program should look like:
}
return 0;
}
This line is causing your grief:
return 0;
If you indented your source correctly, you would be able to see the error much easier. Here it is corrected and indented:
#include <stdio.h>
#include <string.h>
int main(int argc, char *argv[])
{
char s[2048];
while (fgets(s, sizeof(s), stdin))
{
char *pos = strpbrk(s, ">\r\n");
if (pos != 0)
{
char *end = strrchr( pos, '<' );
if ( end )
*end = '\0';
fprintf(stdout, "%s\r\n", pos + 1); /* Fixed formatting */
}
}
return 0;
}
Note that you have tagged this as C++ code, but it is actually just plain old C.
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