forward_list中查找str1并將str2插到后面

Practice 9.28

#include <iostream> #include <string> #include <vector> #include <algorithm> #include <list> #include <iterator> #include <cmath> #include <cstring> #include <forward_list> using namespace std;void print(forward_list<string> flst) {for(auto i : flst) {cout << i << " ";}cout << endl; } // str1 perhaps is equal to str2 void find_str1_insert_str2(forward_list<string> flst, string str1, string str2) {auto cur = flst.begin();while(1) {if(cur == flst.end()) {cout << "Find nothing!" << endl;return;}if(*cur == str1) {cur = flst.insert_after(cur, str2);break;}cur++;}cout << "Done!" << endl;print(flst);return; }int main() {forward_list<string> flst = {"jin", "hai", "jia"};/* test 1 */cout << "test1: find hai insert ding" << endl;find_str1_insert_str2(flst, "hai", "ding");/* test 2 */cout << "test2: find hai insert hai" << endl;find_str1_insert_str2(flst, "hai", "hai");/* test 3 */cout << "test3: find wang insert meng" << endl;find_str1_insert_str2(flst, "wang", "meng");/* test 4 */cout << "test4: find jia insert ding" << endl; find_str1_insert_str2(flst, "jia", "ding");return 0; }

Output

test1: find hai insert ding Done! jin hai ding jia test2: find hai insert hai Done! jin hai hai jia test3: find wang insert meng Find nothing! test4: find jia insert ding Done! jin hai jia ding

Circumstances? I make circumstances!

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