输出菱形

#include<iostream>

using namespace std;

int main()

{

int i,j,k,m,n;

cin>>n;

for(i=1;i<=n;i++)

{

for(j=i;j<=(n+1)/2+1;j++)

cout<<" ";

for(j=1;j<=2*i-1;j++)

cout<<"*";

cout<<endl;

}

for(i=1;i<n;i++)

{

for(j=1;j<=i;j++)

cout<<" ";

for(j=1;j<=2*n-1-2*i;j++)

cout<<"*";

cout<<endl;

}

return 0;}