PTA 倒三角考试题答案

#include <stdio.h>
int main()
{
	int n,i,j,k;
	scanf("%d",&n);
	int c=65;
	for(i=n;i>0;i--)	
	{
		for (j=n;j>i;j--){
			printf(" ");
		}
		for (k=1;k<=2*n-1-2*(n-i);k++){
			printf("%c",c+k-1);
	}
		printf("\n");
	}
	return 0;
}