#include <stdio.h>
int main (void)
{
	int ROWS;
	int row,k;
	char a, b, c;
	printf("please enter a character:");
	scanf("%c",& a);
	ROWS = a - 'A' + 1;

	for (row=0;row<ROWS;row++)
	{
		for (k=0;k<= (ROWS-row);k++)
			printf (" ");
		for (b = 'A';b < ('A' + row);b++)
			printf ("%c",b);
		for (c='A' + row; c>='A';c--)
			printf ("%c",c);
		printf ("\n");
	}
	return 0;
}