Codeforces Round #102 (Div. 2) ——B. Help Kingdom of Far Far Away 2

唉～～～格式处理题，水题啊。。。。。。

细节还是很重要的

View Code

 1 #include<iostream>
 2 #include<cstring>
 3 using namespace std;
 4 
 5 int main()
 6 {
 7     char data[110];
 8     char newdata[200];
 9     for (int i(0); i<110; ++i)data[i] = '0';
10     cin>>data;
11     newdata[0] = '$';
12     bool flag = false;
13     int cnt = strlen(data);
14     int i(0),j(1);
15     if (data[i] == '-')++i;
16     for (int k = i; k<strlen(data); ++k) {
17         if (data[k] == '.') {
18             flag = true;
19             cnt = k;
20             break;    
21         }    
22     }
23     if (cnt-i+1 > 1) {处理大于10的数
24         int CNT;
25         CNT = (cnt - i)%3;
26         if (CNT == 0)CNT = 3;
27         for (; i<cnt; ++i) {
28             if (data[i] <= '9' && data[i] >= '0') {
29                 newdata[j++] = data[i];
30                 --CNT;
31             }
32             if (!CNT) {
33                 if (i+3 >= cnt)CNT = 100;
34                 else {
35                     CNT = 3;
36                     newdata[j++] = ',';
37                 }    
38             }        
39         }
40         newdata[j++] = '.';
41         newdata[j++] = data[i+1] == '\0'?'0':data[i+1];
42         newdata[j++] = data[i+2] == '\0'?'0':data[i+2];     
43     } else {//处理小于10的数
44         for (int k = 0; k < 4; ++k){
45             newdata[j++] = data[i++];
46             if (newdata[j-1] == '\0')newdata[j-1] = '0';
47         }
48     }
49     newdata[j] = '\0';
50     if(data[0] == '-')cout<<"("<<newdata<<")"<<endl;
51     else cout<<newdata<<endl;
52     return 0;    
53 }