Using sscanf() to extract strings

[reefbarman]

hi everyone,

what i want to do is be able to remove the last character from my c string, now i thought i could do this sscanf(), but its driving me nuts it wasn't working at the start then i added an extra variable called grab and it worked, but it was removing one too many characters, so i changed the variable and now its not working again
here
is my code

Code: Select all

temp = line[linesUsed].data;
int grab = totalChars - 1;
sscanf(temp, "%[grab]s", line[linesUsed].data);
chars--;
totalChars--;
if &#40;chars < 0&#41;&#123;linesUsed--; chars = MAX_CHARS;&#125;	

basically what im trying to do is make a backspace function for my program thanks for your help

[dot_blank]

use the std lib string handling for such things

here is a example file extensions

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#define FILE "some_file.ext"
#define FILE_BASE  "%s/%s"
#define PSP_BASE  "ms0:/PSP/GAME/SOME_GAME/"

char temp[1024];
char *file;

snprintf(temp, 1024, FILE_BASE, PSP_BASE, FILE);
file = strrchr(temp, '.');

// finish this simple problem to familiarize yourself 
// with using std lib string handling

[reefbarman]

mmmm i still dont understand how this will help, isnt what your example is doing is concatenating strings??

sorry im so used to using languages like c++, java and the like that im really having trouble using c style strings as i really never used straight c before so im not really familar with many c functions

[kuroneko]

Would this help? I assume line[linesUsed].data is the actual string and temp a char* (ASCII string, no multibyte characters).

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temp = line[linesUsed].data;
if (temp[0]) /* string not empty */
{
    temp[strlen(temp)-1] = '\0';
}

[reefbarman]

that worked b e a utifully thanks