视频笔记

#include<iostream>
using namespace std;
void main()
{
char c;
for(int n;cin>>c>>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';
}
}
#include<iostream>
using namespace std;

class Outer
{

class Inner
{
public:
void Fun()
{
cout<<"Inner::Fun..."<<endl;
}
};
public:
Inner obj_;
void Fun()
{
cout<<"Outer::Fun.."<<endl;
obj_.Fun();
}
};

int main(void)
{
Outer o;
o.Fun();
return 0;
}