oj---九度oj---1065

#include<cstdio>
int main(){
    int h;
    scanf("%d",&h);
    int blanks;
    int num;
    for(int i=0;i<h;i++){
        num=h+i*2;
        blanks=(3*h-2)-2*i-h;
        while(blanks--) printf(" ");
        while(num--){
            printf("*");
            if(num==0)
                printf("\n");

        }
    }
    return 0;
}