用setw、cout和for循环编写*

#include<iostream>
#include<iomanip>
#define Number 5
using namespace std;

int main(){
    for(int i = 0 ; i < 4; ++i){
        int number = 4 - i;
        cout<<setw(number)<<"*";
        for(int j = 0 ; j < i * 2; ++j){
            cout<<"*";
        }
        cout<<endl;

    }
}