File and auto startup problem

Hi,

im writting a code for count the reboots and shutdowns in windows7.
In the first run the program works fine, write the file and don´t show error msg. After a reboot or shutdown the program auto startup fine but don´t write the file.

the code:

Code:

---

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
//------------------------------------------------------------------------------
int s(void);
int c(void);
//------------------------------------------------------------------------------
int main(int argc, char *argv[]){
 
 if(s()== 0) return 0;
 if(c()== 0) return 0;
 
 while(1){Sleep(100);} //  view return function
 
 return 1;
}
//------------------------------------------------------------------------------
int s(void)
{
  HKEY hkey;
 
  const char PATH[] =
  "C:\\Users\\User1\\Desktop\\reboot.exe"; // desk for now
 
   
  int regResult=RegOpenKeyEx(HKEY_CURRENT_USER/*HKEY_LOCAL_MACHINE*/,
  "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",0,KEY_SET_VALUE,&hkey);
  if(regResult != 0) /*return 0;*/ printf("REG OPEN ERROR\n");
 
  regResult=RegSetValueEx(hkey,"count",0,REG_SZ,(BYTE *)PATH,
  strlen(PATH));
  if(regResult != 0) /*return 0;*/printf("REG SET ERROR\n");
   
  regResult=RegCloseKey(hkey);
  if(regResult != 0) /*return 0;*/printf("REG CLOSE ERROR\n");
  return 1;
}
//------------------------------------------------------------------------------
int c(){
      FILE *counter;
     
      counter=fopen("filecounter.txt","a");
      if(counter==NULL) /*return 0;*/ printf("FILE OPEN ERROR\n");
     
      int check=fprintf(counter,"hello\n");
      if (check==0) /*return 0;*/ printf("FPRINTF ERROR\n");
     
      //int check = fputs("hello\n",counter);            // don´t work
      //if (check!=0) return 0; // printf("FPUTS ERROR\n");
     
      if(fclose(counter)!= 0) /*return 0;*/ printf("FCLOSE ERROR\n");
     
      return 1;
}
//------------------------------------------------------------------------------

---

Thanks

PS: The counting funcion is not write yet. Im just trying write the file.

PS2: Compiling with Dev-c++ 4.9.9.2, Windows7 Ultimate

It could be a permissions error or a path error. Check errno after fopen() fails and that will tell you why it's failing. You'll need to #include <errno.h>.

Also, I'd highly recommend you not get in the habit of using one-character function names. Symbol names should convey their purpose.

>> fopen("filecounter.txt","a");
The location of this file depends on the current working directory. I recommend using a full path name.

>> Compiling with Dev-c++ 4.9.9.2
That's fairly old. This should be an easy transition into something newer - wxDev-C++

gg

Hi guys,

the problem was the full path in c() function.

Code:

---


//------------------------------------------------------------------------------  int c(){        FILE *counter;              counter=fopen("C:\\Users\\User1\\Desktop\\filecounter.txt","a");        if(counter==NULL) /*return 0;*/ printf("FILE OPEN ERROR\n");              int check=fprintf(counter,"hello\n");        if (check==0) /*return 0;*/ printf("FPRINTF ERROR\n");              if(fclose(counter)!= 0) /*return 0;*/ printf("FCLOSE ERROR\n");              return 1;  }  //------------------------------------------------------------------------------

---

Now write the file on startup.

Thanks a lot!