林羿丞

1. #include<bits/stdc++.h>
   
2. using namespace std;
   
3. int main(){
   
4.    int a,b;
   
5.    char c;
   
6.    cin>>a>>b>>c;
   
7.    if(c=='+'||c=='-'||c=='*')
   
8.    printf("%d%c%d=%d",a,c,b,(c=='+'?a+b:c=='*'?a*b:a-b));
   
9.    else
   
10.     cout<<"error\n";
    
11.    return 0;
    
12. }

複製代碼