1 #include<iostream> 2 #include<iomanip> 3 using namespace std; 4 int main(){ 5     int i,j,n; 6     cin>>n; 7     for(i=1;i<=n;++i){ 8         for(j=1;j<=i;++j){ 9             cout<<j<<"*"<<i<<"=";10             cout<<left<<setw(4)<<i*j;11         }12         cout<<endl;13     }14     return 0;15 }