C check if file exists

if( access( fname, F_OK ) == 0 ) {
    // file exists
} else {
    // file doesn't exist
}

C check if file was created

int canCreateFile(char* path)
{
	FILE* file = fopen(path, "w");
  	if(file)
    {
  		fclose(file);
      	return 1;
    }
  	return 0;
}

-1

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