这不用数组也可以

#include<cstdio> #include<iostream> #include<cmath> using namespace std; int main(){ int a; cin>>a; if(a==0){ cout<<"Error"; return 0; } for(int i=1;i<=a;i++){ for(int j=1;j<=a;j++){ cout<<i<<"x"<<j<<"="; printf("%2d ",i*j); } cout<<endl; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; if(n==0) cout<<"Error"; else{ for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ cout<<i<<"x"<<j<<"="<<setw(2)<<i*j<<" "; } cout<<endl; } } return 0; }

#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; }

#include <iostream> #include <cstdio> using namespace std; int main(){ int n; cin >> n; for(int i = 1;i <= n;i++){ for(int j = 1;j <= n;j++){ printf("%dx%d=%2d ",i,j,i*j); } cout << endl; } if(n == 0){ cout << "Error"; } return 0; }**

注意了，那不是*，是小写的x！

#include<iostream> using namespace std; int main(){ int n; cin>>n; if(n!=0){ for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ printf("%dx%d=%2d ",i,j,i*j); } cout<<endl; } }else{ cout<<"Error"; } return 0; }

#include<bits/stdc++.h> using namespace std; int main(){ int a,b; cin>>a; if(a<=0){ cout<<"Error"; } for(int i=1;i<=a;i++){ for(int j=1;j<=a;j++){ b=i*j; if(b>=10&&b<=99){ cout<<i<<"x"<<j<<"="<<b<<" "; } else{ cout<<i<<"x"<<j<<"= "<<b<<" "; } } cout<<endl; } return 0; }

#include<iostream> #include<iomanip> using namespace std; int main(){ int n; cin>>n; if(n==0){ cout<<"Error"; return 0; } if(n>=0&&n<=9){ for(int i=1;i<=n;i++){ for(int j=1;j<=n;j++){ cout<<i<<"x"<<j<<"="<<setw(2)<<i*j<<" "; }cout<<endl; } } return 0; }