How to flush the buffer

[Unregistered]

Hai guys,

I have a problem in the program,

int main()
{
	char option='y';
while( option == 'y')
{
	/* do somthing */
	printf("Want to continue [y|n]");
	scanf("%c",&option);
}

}

it works very well in first time , when i give the input 'y'. But it come out of the loop when i give the same char 'y' in the second time. what is the error in this program. i am working in linux OS. Help me.

[Lazy Student]

here u go!

#include <stdio.h>
int main()
{
char option='y';char trash;
while( option == 'y')
{
/* do somthing */
printf("Want to continue [y|n]");
scanf("%c%c",&option,&trash);
}

}

[Hammer]

while (getchar() != '\n');

[Unregistered]

scanf("%c%c",&option,&trash)

cool... it is kinda funny to see "trash"
'cause i used to have this lousy problem when
i was new

[moonwalker]

here's a nifty function that does what you want

char playagain()        //asks if he/she wants to play again
{
    char yesorno;
    do 
    {
        printf("Do you want to play again? (y/n): ");
        scanf("%c", &yesorno);
        fflush(stdin);
    } while (yesorno != 'y' && yesorno != 'Y' && yesorno != 'n' && yesorno != 'N');
    return yesorno;
} 

[The Dog]

>> fflush(stdin);

Oh boy someone's in for it!!

[Hammer]

Good grief, not the fflush(stdin) conversation AGAIN!

Don't do it, don't teach others to do it. It's just plain wrong.