字符与数字之间的转换

#include <iostream>
#include<vector>
#include <string>
#include <algorithm>
#include<sstream>
using namespace std;

int StoI(const string &s)
{
    istringstream is(s);
    int tmp = 0;
    is >> tmp;
    return tmp;
}

string ItoS(const int num)
{
    ostringstream os;
    os << num;
    string tmp = os.str();
    return tmp;
}

//分隔字符
void GetString(vector<string> &data, string s)
{
    istringstream is(s);
    string tmp="";
    while (is >> tmp)
      data.push_back(tmp);
}

int main()
{
    string s;
    vector<string> data;
    while (getline(cin, s))
    {
        GetString(data, s);
    } 
    for (auto c : data)
    {
        cout << c << endl;
    }
    system("pause");
}