return string from function

[CyberCarsten]

Hi
I have a small fileloading function. The function loads a file passed on to it by a filechooserdlg, within that file, is the name of another file to load....but I don't know how to return it......
Here it is:

#include "defines.h"

char *loadmap(char *map) {
  FILE *file;                       // pointer to FILE structure
  char str[STR_LEN];            // String for holding file content
  int ch;                           // Check for EOF
  int i = 0;                        // Loop counter var
  
  file = fopen(map,"r");    // Open file


  while ((ch = fgetc(file)) != EOF){ // Store the content in str
    str[i] = ch;
    i++;
  }
  str[i] = '\0';

  
  fclose(file);                          // Cleanup  

  return str;                           // Returned filename - - not working
}

I am calling the loadmap function like this:

 char *filename;

    filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
char *map;
    map= loadmap(filename);

Can anyone see the error???

[aewarnick]

str is a local variable. It is destroyed after the function returns.

You need to either make str static or dynamically allocate memory and return the pointer, just remember to delete[] it.