#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
using namespace std;

int main()
{
	FILE *p;
	p = fopen("input.txt", "r");
	freopen ("output.txt", "w", stdout);
	for (int i = 0; i < 20; i++)
	{
		char c;
		c = fgetc(p);
		printf("char [%c]\n", c);
		fseek(p, -1, SEEK_CUR);
		c = fgetc(p);
		printf("!!again char [%c]\n", c);
	}


	return 0;
}