需要包含头文件”sstream”
1 #include <iostream> 2 #include <string> 3 #include <sstream> 4 using namespace std; 5 int string2int(string str){ 6 int num; 7 stringstream sstream; 8 sstream << str; 9 sstream >> num; 10 return num; 11 } 12 string int2string(int num){ 13 string re; 14 stringstream sstream; 15 sstream << num; 16 return sstream.str(); 17 }