why my program doesn't read the end of file sequence

[piero borrelli]

i have a question, i'm studyng the string library type and i have to write this program :

std::string word; 
while (std::cin >> word) {
std::cout << word << std::endl; 

}

why if my input is :

hi my name is ^Z

the output is :

hi
my
name
is

why the program doesn't fall out from the while loop ?
why my program does not recognize my sequence of end of file ?

i'm a beginner and i need help...thank you

[laserlight]

Enter the control sequence represented by ^Z on a separate line.

[vart]

On windows for emulating EOF condition - it could be Ctrl^D not Ctrl^Z

[grumpy]

On windows for emulating EOF condition - it could be Ctrl^D not Ctrl^Z

Under windows, no it's not. CTRL-D is unix, not windows.

The usual requirement under windows when reading from stdin without redirection (e.g. from a file), is that EOF is represented by a newline followed by CTRL-Z, as laserlight described.

[piero borrelli]

Under windows, no it's not. CTRL-D is unix, not windows.

The usual requirement under windows when reading from stdin without redirection (e.g. from a file), is that EOF is represented by a newline followed by CTRL-Z, as laserlight described.

i can't understand.
why in this program the end of file sequence works :

#include <iostream> 
#include <string> 


int main()
{
    int val = 0, currVal = 0; 

    if (std::cin >> val) {
        int cnt = 1; 

        while (std::cin >> currVal) {

            if (val == currVal)
                ++cnt; 

            else {

                std::cout << val << " occurs " << cnt << " times " << std::endl; 
                val = currVal; 
                cnt = 1; 
            }//end of else 
        }//end of while 

        std::cout << val << " occurs " << cnt << " times " << std::endl;
        system("pause"); 
        
    }//end of outhermost if

    return 0; 

}

here in this program the end of file sequence works perfectly but with the type string it doesn't, why ?
thank you

[grumpy]

Look up what "if (std::cin)" and "while (std::cin)" are actually testing ..... it is not end of file.