#include <iostream>
#include <sstream>
#include <string>
using namespace std;
int string2int(string str){
stringstream ss;
ss << str;
int result;
ss >> result;
return result;
}
int main() {
string str="123";
int result = string2int(str);
cout << result << endl;
return 0;
}
整型转字符串
#include <iostream>
#include <sstream>
#include <string>
using namespace std;
string int2string(int num){
stringstream ss;
ss << num; //将数字传入流中
string result;
ss >> result; //将流中的值写入到result中
return result;
}
int main() {
int num = 123;
string result = int2string(num);
cout << result << endl;
return 0;
}