题解 | #圣诞树#

#include <stdio.h>
int main(){
    int n,t;
    char c;
    scanf("%d %c",&n,&c);
    t=3*n-1;
    int i=1;
    while(i<=3*n){
        int m;
        m=i;
        int a=0;
        while(a<t){
            printf(" ");a ++;
        }
        int cnt=1,b,d=1;
        while(i>3){i=i-3;cnt ++;
        }while(d<=cnt){
            if(i==1){printf("%c     ",c);
            }
            if(i==2){printf("%c %c   ",c,c);
            }
            if(i==3){printf("%c %c %c ",c,c,c);
            }
            
            d ++;
        }printf("\n");
        i=m;
    t --;
        i ++;
    }
    int v=1;
    while(v<=n){int p=1;
        while(p<=3*n-1){printf(" ");p ++;
        }
    printf("%c\n",c);v ++;
    }
    
    return 0;
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