C/菱形.cpp

//<2F><><EFBFBD><EFBFBD> 
#include<stdio.h>        

void pr_start(int _num)
{
    int n=0;
    int i = 0;
    for (n = 1; n <= 2*_num; n++)         
    {
        int temp = n;
        if (n > _num)
        {
            temp -= 2 * (n - _num);
        }
        for (i = 1; i < 2 * _num; i++)
        {
            if ((i>=(_num - temp + 1 )) && (i<=(temp + _num-1))) 
            {
                printf("*");
            }
            else
            {
                printf(" ");
            }
        }
        printf("\n");
    }
}

int main()
{
    int num = 0;
    printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Σ<EFBFBD>");
    scanf("%d", &num);
    pr_start(num);
    return 0;
}