#include <iostream>
#include<cstdlib>
using namespace std;
int main() {
for(int a=0; a<20;a++){
for (int c=(20-a)/2;c>=0;c--)
{cout<<" ";
}
for(int b=0;b<=a;b++)
{
cout<"*";
}
cout<<endl;
}
system("pause");
return 0;
}
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