【模板小程序】字符串截取

 1 /*
 2 本程序说明：
 3 
 4 字符串截取，如字符串qwer kkk/f/lsj sdfgh pppi/uhgf根据"/"分割为qwer kkk、f、lsj sdfgh pppi、uhgf
 5 
 6 */
 7 #include <iostream>
 8 #include <vector>
 9 #include <string>
10 
11 using namespace std;
12 
13 //字符串截取
14 vector<string> split_string(const string& str, const string& pattern)
15 {
16     vector<string> resVec;
17 
18     if ("" == str)
19     {
20         return resVec;
21     }
22 
23     int index_start=0;
24     size_t pos = str.find(pattern,index_start);
25     while(pos!=string::npos)
26     {
27         resVec.push_back(str.substr(index_start,pos-index_start));
28         index_start=(pos+=pattern.length());
29         pos = str.find(pattern,index_start);
30     }
31     //截取最后一个
32     resVec.push_back(str.substr(index_start,str.length()-index_start));
33 
34     return resVec;
35 }
36 
37 int main()
38 {
39     //测试样例
40     //vector<string> resVec=split_string("qwer kkkflsj sdfgh pppiuhgf"," ");
41     //vector<string> resVec=split_string("qwer kkk/f/lsj sdfgh pppi/uhgf","/");
42     vector<string> resVec=split_string("qwer","/");
43     for(auto val:resVec)
44         cout<<val<<endl;
45 
46     return 0;
47 }