数字菱形，由双层金字塔变形而来

#include<stdio.h>
int main()
{
int i,j,n,m;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
for (j=1;j<=n-i;j++)
printf(" “);
for(j=1;j<=2i-1;j++)
printf("%d",i);
printf("\n");
}
for (i=1;i<=n-1;i++)
{
for (j=1;j<=i;j++)
printf(" ");
for(j=1;j<=2(n-i)-1;j++)
printf(”%d",n-i);
printf("\n");
}
return 0;
}