acm 梯形

#include<stdio.h>
 
void tixin(int h)
{
    int linewidth=h+(h-1)*2+1;
    int i,j;
 
    for(i=1;i<=h;i++)
    {
        for(j=1;j<=linewidth;j++)
        {
            if(j<linewidth-h-(i-1)*2)
            {
                putchar(' ');
            }
            else if(j<linewidth)
            {
                putchar('*');
            }
            else
            {
                putchar('\n');
            }
        }
    }
     
}
int main(int argc,char** argv)
{
    int h;
    while(scanf("%d",&h)!=EOF)
    {
        tixin(h);
    }
    return 0;
}
/**************************************************************
    Problem: 1065
    Language: C
    Result: Accepted
    Time:80 ms
    Memory:904 kb
****************************************************************/