HDU 1717

关于小数话分数的知识点在学习与借鉴里面、
直接放代码了
 1 #include<iostream>
 2 #include<cstring>
 3 #include<cstdio>
 4 #include<cmath>
 5 using namespace std;
 6 int gcd(int a,int b)
 7 {
 8     if(b==0)    return a;
 9     return gcd(b,a%b);
10 }
11 int main()
12 {
13     int n;cin >> n;cin.get();
14     while(n--){
15         int mu1,mu2,zi1,zi2;
16         mu1=mu2=1;
17         zi1=zi2=0;
18         int flag=1;
19         char s[20];
20         cin >> s;
21         for(int i=2;i<strlen(s);++i){
22             if(s[i]=='(')    flag=0;
23             if(isdigit(s[i])){
24                 if(flag){
25                     mu1*=10;
26                     zi1=zi1*10+s[i]-'0';
27                 }
28                 mu2*=10;
29                 zi2=zi2*10+s[i]-'0';
30             }
31         }
32         if(flag){
33             int digit=gcd(mu1,zi1);
34             printf("%d/%d
",zi1/digit,mu1/digit);
35         }
36         else{
37             printf("%d/%d
",(zi2-zi1)/gcd(mu2-mu1,zi2-zi1),(mu2-mu1)/gcd(mu2-mu1,zi2-zi1));
38         }
39     }
40  }