Concatenating Struct Value With Char In C


 
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Old 05-30-2016
I'm glad my comments have helped.

Note also that unless you are absolutely positive that that your arrays are large enough to hold the desired text, you should verify that the snprintf(), strncat(), etc. calls didn't truncate your buffer (instead of silently continuing with truncated data). For example, with the last example loop in post #4, consider adding error checking as follows:
Code:
        while((ep = readdir(dp)) != NULL) {
          if(strcmp(".", ep->d_name) && strcmp("..", ep->d_name)) {
            if(snprintf(dir, sizeof(dir), "%s%s", pro, ep->d_name) >=
                sizeof(dir)) {
              fprintf(stderr, "Processing for %s%s skipped (buffer overflow)\n",
                  pro, ep->d_name);
              continue;
            } 
            printf("%s\n", dir);
          }
        }
        (void)close(dp);

This User Gave Thanks to Don Cragun For This Post:
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