Thread: String issue

I am always returning junk values to cmdLine in main.
I have tried declaring cmdLine as: char * cmdLine

I also tried with the current code sending *cmdLine but then i get a pointer from int without cast error.
I want to send the char pointer to the sub-routine, have the sub routine put the string at that address and exit leaving me with a variable with a string in it in main. This is a re-occurring issue in code that I write.

Thanks!

Code:

const char *builtInCmd[3] = {
		"cd",
		"exit",
		"help"}; 
int main (int argc, char **argv)
{
// Local Variables
	int childPid, isBuiltIn;
  char cmdLine[50];
  if(readCommandLine(cmdLine) == 1) {    
			printf("The command is %s\n", cmdLine);

			isBuiltIn = isBuiltInCommand(cmdLine);
			printf("The builtin Numb is:%i", isBuiltIn);
		}
}

//Read user input and tare it down
int readCommandLine(char *cmd_p){
	char buf[80], *p;
	fflush (stdout);
	cmd_p = fgets (buf, 80, stdin);
	if(strlen(cmd_p) > 0)
		return 1;

	return -1;
}

fgets() returns buf when it is done though. Unless it is the end of file then it returns a null char.
That being the case, I still don't understand.

That just changes the local value of cmd_p. It's not going to actually put anything into the area where cmd_p originally pointed, and the changes to cmd_p will also not be seen outside the function.