HDU 1228 - A + B

 1 #include <iostream>
 2 #include <string>
 3 using namespace std;
 4 int cal(string b)
 5 {
 6     int w;
 7     if(b=="zero") w=0;
 8     else if(b=="one")w=1;
 9     else if(b=="two")w=2;
10     else if(b=="three") w=3;
11     else if(b=="four") w=4;
12     else if(b=="five") w=5;
13     else if(b=="six")w=6;
14     else if(b=="seven")w=7;
15     else if(b=="eight")w=8;
16     else if(b=="nine")w=9;
17     return w;
18 }
19 int main()
20 {
21     string b1,b2,b3,b4;
22     char op,a;
23     int x,y;
24     while(cin>>b1)
25     {
26        cin>>b2;
27        if(b2.length()==1)
28        {
29             op=b2[0];
30             x=cal(b1);
31        }
32        else
33        {
34             x=cal(b1)*10+cal(b2);
35             cin>>op;
36        }
37        cin>>b3;
38        cin>>b4;
39        if(b4.length()==1)
40        {
41             y=cal(b3);
42        }
43        else
44        {
45             y=cal(b3)*10+cal(b4);
46             cin>>a;
47        }
48        int ans;
49        if(x+y==0) break;
50        if(op==‘+‘) ans=x+y;
51        else if(op==‘-‘) ans=x-y;
52        else if(op==‘*‘) ans=x*y;
53        else if(op==‘/‘) ans=x/y;
54        cout<<ans<<endl;
55     }
56 }