当我使用Ctrl-C终止输入时，Visual Studio 2013中的输出减少了

Question

//Program to terminate the input by ctrl-c    
#include<iostream>
#include<vector>
#include<string>

using namespace std;

int main()
{
    vector<string> vec;
    string word;

    while (cin >> word)
        vec.push_back(word);

    cout << endl << endl;
    auto beg = vec.begin();
    while (beg != vec.end())
    {
        //to print the vector
        cout << *beg << endl;
        beg++;
    }
}

When in press control-c to terminate the input stream of...

ankur
anshu
singh
ankit
ashuto
ashu 

I get...

ankur
anshu
si^CPress any key to continue . . .

Answer 1

In a terminal (aka command line), Ctrl+C kills the program immediately. It doesn't wait for anything or anyone. Thus, your program is literally stopping in the middle of execution, so what it does and doesn't do is a total crapshoot.

In some cases, you may actually want Ctrl+D (Linux/Unix) or Ctrl+Z (Windows), which signifies "end of document". That may be interpreted as "end of input" without otherwise interrupting the program. However, your results may vary.