#include <stdio.h>
int main()
{
int times;
int t = 0;
int h,j;
char n = 'A';
printf("請輸入字母的行數：");
scanf("%d",&times);
for(h = 1; h <= times; h++)
{
?for(j = 1; j < times -h +1; j++)
printf(" ");
?for(j = 1; j <= (2 * h -1) ; j++)
printf("%c", n);
?printf("\n");
?n++;
}
return 0;
}