Thread: clearthe buffer

I am trying to clear the buffer with the while(getchar() != '\n') ; but it does not appear to be clearing. What am I doing wrong?

Code:

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#define str_length 100
void main()
{

	char str1[100];			/* array for first string */
	char str2[100];			/* array for second string */
	char *pstr1 = NULL;	/* pointer to str1 */
	char *pstr2 = NULL;	/* pointer to str2 */
	int count1;				/* length of str1 */
	int count2;				/* length of str2 */
	char more = 'y' ;				/* variable to continue with the loop y||Y */
	int i = 0;				/*loop counter */
	char *pbuffer1 =str1;
	char *pbuffer2 =str2;

	printf("Please enter the first word\n");
	pstr1 = pbuffer1;

	count1 = strlen(pstr1);

	while((*pbuffer1++ = getchar()) != '\n');

	*(pbuffer1 - 1) = '\0';

	printf("Please enter the second word\n");

	pstr2 = pbuffer2;
	count2 = strlen(pstr2);

	while((*pbuffer2++ = getchar()) != '\n');
	
	*(pbuffer2 - 1) = '\0';


	do
	{
	/* concatenate str2 to end of str1 */
	if(count1 == count2 ||count1 < count2 )
	/*{
	for(i = 0; i < count1; i++)
		printf(" you entered %c\n", pstr1 + i);*/
	{
	printf(" %s %s and \n", pstr1,pstr2);
			
	printf(" %s %s\n",strrev(pstr1), pstr2);
	
	}
	else
	/* concatenate str1 to end of str2 */
	{
	printf(" %s %s and \n", pstr2,pstr1);

	printf(" %s %s \n",strrev(pstr2),pstr1);
	
	}

	printf(" Would you like to continue? y or n:\n"); /* ask user if they want to enter more data */

	scanf("%c", &more);									/* read the input */


	while(getchar() != '\n') ; /* flush input buffer it appears that the scanf leaves a \n inthe buffer */
	
	}while(more == 'y' || more == 'Y'); /*Test to continue or not*/


	printf("The strings enter were %s\n %s\n", pstr1, pstr2);
}

Thanks, That is some damn good information. The book I have does not cover these two questions.