Thread: scanf issue - character in buffer

basically the program is just a guessing game. you guess a number between 1 and 1000. my friends run it and it works, so i think its a linux problem. when the program asks if i want to play again, it just kills the program unless i scan in two letters, when all im looking for is a 'y' or an 'n'. does anybody know why this happens? i run ubuntu

Code:

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>


int readGuess()
{
	int answer;
	scanf( "%d", &answer );
	return answer;
}

/*returns initial guess*/
int initGame(int *random)
{
	*random = (rand()%1000) + 1;
	printf("I have a number between 1 and 1000\n");
	printf("Can you guess my number\n");
	printf("Please type your first guess. ");
	return readGuess();
}

int guessAgain()
{
	return readGuess();
}

int main()
{	
	/*randomize number to guess.*/
	srand((unsigned) time (NULL));

	char cont = 'y';
	int random;
	int answer = initGame(&random);
	printf("%d",random);	

	while (cont == 'y')
	{
		if (answer == random)
		{
			printf("Excellent! You guessed the number!\n");
			printf(" Would you like to play again (y or n)? ");
			
			fflush (stdin);
			scanf( "%c", &cont );
			printf( "DD%cDD", cont );
			printf("\n\n");
			
			if (cont == 'y')
				answer = initGame(&random);
			continue;
		}
		else if (answer <= random)
			printf("Too low. Try again.\n");
		else if (answer >= random)
			printf("Too high. Try again.\n");
		answer = guessAgain();
	}	
}

. thanks for that knowledge. i just started to use c and c++. this forum (which i found after i posted this) said the same thing:
A problem with scanf()? - Linux Forums


i did comment out fflush, and putting getchar after the scanf that reads in the guess worked.

thanks.