Example: fputc
The following example opens a log file and writes the id number and group name of the Virtual User to it using fputc.
#include <stdio.h>
#ifdef unix char * filename = "/tmp/logfile.txt"; #else char * filename = "c:\\logfile.txt"; #endif FILE* file; char * p, str[] = "this is the first line of the log file"; int c;
// Create a new file
if ((file = fopen(filename, "w+" )) == NULL) { lr_output_message ("Unable to create %s", filename); return -1; }
// Print string to the log file
// p points to the first character in str
p = str;
// Use -1 or EOF while ((*p != NULL) && fputc(*(p++), file) != -1); fclose(file);
Example: Written to log file:
this is the first line of the log file