题解

#include<iostream>
using namespace std;
int main(){
int n;
cin >> n;
int num=0;
if(n==0){
cout << "Error";
return 0;
}
for(int a=1;a<=n;a++){
for(int e=1;e<=n;e++){
cout << a << "x" << e << "=";
num = a*e;
if(num<=9){
cout << " " << num << " ";
}else{
cout << num << " ";
}
}
cout << endl;
}
return 0;
}