1.字符串的输入
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
int main()
{
string a;
int sum = 0,x;
getline(cin,a); //11 22 33
stringstream ss(a);
for(int i = 0; i < 3; i++)
{
ss >> x;
sum += x;
}
cout << sum; //66
return 0;
}
