#include<stdio.h>
#define n 3
int main()
{
int i,j;
for(i=0;i<=n;i++)
{
for(j=1;j<=n-i;j++)
printf(“ “);
for(j=1;j<=2*i+1;j++)
printf(“*“);
printf(“\n“);
}
for(i=n-1;i>=0;i--)
{
for(j=1;j<=n-i;j++)
printf(“ “);
for(j=1;j<=2*i+1;j++)
printf(“*“);
printf(“\n“);
}
}


请高手解答一下…语句的意义！作用！