程序代码：

#include<iostream>
#include<string>
using namespace std;
void main()
{
    int n;
    char c;
    cout<<"请输入n,n一定要为奇数";
        cin>>n;
    while(n%2==0)
    {
        cout<<"输入错误，请重新输入n：";
            cin>>n;
    }
    for(int i=1;i<=n;++i)
        cout<<string(n-i,' ')+string(2*i-1,'c')+"\n";
    for(int i=1;i<=n-1;++i)
        cout<<string(i,' ')+string(2*n-1-2*i,'c')+"\n";
   
}