这种方式可以串流吗？从字符串转换为int？

Question

是否有可能像这样串流？我试着用ifstream读取并转换它.

string things = "10 11 12 -10";
int i1;
int i2;
int i3;
int i4;
stringstream into;
into << things;
into >> i1;
into >> i2;
into >> i3;
into >> i4;

我希望它是:

i1 = 10
i2 = 11
i3 = 12
i4 = -10

那是对的吗？

可以多次使用相同的stringstream变量吗？

当我尝试时,第一次没问题,但其他一切都只是0.

Answer 1

那肯定会奏效.您甚至可以混合类型,如下所示:

string things = "10 Nawaz 87.87 A";
int i;
std::string s;
float f;
char c;

stringstream into;
into << things;
into >> i >> s >> f >> c; //all are different types!

cout << i <<"  "<< s <<"  "<< f <<"  "<< c;

输出:

10 Nawaz 87.87 A

在ideone上演示:http://www.ideone.com/eb0dR