NYOJ 73 比大小

 1 #include<iostream>
 2 using namespace std;
 3 #include<string.h>
 4 char a[1011],b[1011];
 5 int main()
 6 {
 7     int i;
 8     while(cin>>a>>b,a[0]!=‘0‘||b[0]!=‘0‘)
 9     {
10         if(a[0]==‘-‘||b[0]==‘-‘)
11         {
12             if(a[0]==‘-‘&&b[0]!=‘-‘)
13             {
14                 cout<<"a<b"<<endl;
15                 continue;
16             }
17             else if(a[0]!=‘-‘&&b[0]==‘-‘)
18             {
19                 cout<<"a>b"<<endl;
20                 continue;
21             }
22             else
23             {
24                 if((int)strlen(a)>(int)strlen(b))
25                 {
26                     cout<<"a<b"<<endl;
27                     continue;
28                 }
29                 else if((int)strlen(a)<(int)strlen(b))
30                 {
31                     cout<<"a>b"<<endl;
32                     continue;
33                 }
34                 else
35                 {
36                     for(i=1;i<(int)strlen(a);i++)
37                     {
38                         if(a[i]>b[i])
39                         {
40                             cout<<"a<b\n";
41                             break;
42                         }
43                         else if(a[i]<b[i])
44                         {
45                             cout<<"a>b\n";
46                             break;
47                         }
48                     }
49                     if(i>=(int)strlen(a))
50                         cout<<"a==b\n";
51                 }
52             }
53         }
54         else
55         {
56             if((int)strlen(a)>(int)strlen(b))
57             {
58                 cout<<"a>b"<<endl;
59                 continue;
60             }
61             else if((int)strlen(a)<(int)strlen(b))
62             {
63                 cout<<"a<b"<<endl;
64                 continue;
65             }
66             else
67             {
68                 for(i=0;i<(int)strlen(a);i++)
69                 {
70                     if(a[i]>b[i])
71                     {
72                         cout<<"a>b\n";
73                         break;
74                     }
75                     else if(a[i]<b[i])
76                         {
77                             cout<<"a<b\n";
78                             break;
79                         }
80                 }
81                 if(i>=(int)strlen(a))
82                     cout<<"a==b\n";
83             }
84 
85         }
86     }
87     return 0;
88 }

 1  
 2 #include<iostream>
 3 #include<string>
 4 using namespace std;
 5 
 6 int main()
 7 {
 8     string a,b;    
 9     while(cin>>a>>b)
10     {
11         if(a=="0"&&b=="0")
12             return 0;
13         if(a==b)
14             cout<<"a==b"<<endl;
15         else if(a[0]==‘-‘&&b[0]==‘-‘)
16             {
17                 if(a.substr(1,string::npos)>b.substr(1,string::npos)||a.length()>b.length())
18                     cout<<"a<b"<<endl;
19                 else cout<<"a>b"<<endl;
20             }
21         else if(a>"0"&&b>"0"||a<"0"&&b<"0"&&a.length()>b.length()||a>b)
22                 cout<<"a>b"<<endl;
23         else if(a<"0"&&b>"0"&&a.length()>b.length()||a>b)
24                 cout<<"a<b"<<endl;
25             
26     }
27 }