C语言IO流控制

#include <stdio.h>

int input(char *p, int length);
void clearstdin();
int main()
{
	char a[10];
	char b[10];

//	scanf("%s", a);
	input(a, 10);
	clearstdin();
	printf("%s\n", a);
	scanf("%s", b);
	printf("%s\n", b);
	return 0;
}

int input(char *p, int length)
{
	int count = 0;
	char buff;
	while (((buff = getchar ()) != '\n') && count < (length - 1))
	{
		p[count] = buff;
		count++;
	}
	p[count] = '\0';

	return count;
}

void clearstdin()
{
	char a;
	while ((a = getchar()) != '\n' && a != EOF);
}

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