C wait for user input

Question

What would be the best way to wait for user input in console application   std  cout  lt  lt   press any key to exit         wait for user to hit enter or another key

User · Answer

You can try   include  lt iostream gt   include  lt conio h gt   int main            some codes      getch        return 0

User · Answer

Several ways to do so  here are some possible one-line approaches   Use getch    need  include  lt conio h gt     Use getchar    expected for Enter  need  include  lt iostream gt     Use cin get    expected for Enter  need  include  lt iostream gt     Use system  quot pause quot    need  include  lt iostream gt    PS  This method will also print Press any key to continue       on the screen   seems perfect choice for you        Edit  As discussed here  There is no completely portable solution for this  Question 19 1 of the comp lang c FAQ covers this in some depth  with solutions for Windows  Unix-like systems  and even MS-DOS and VMS

User · Answer

There is no  standard  library function to do this  The standard  perhaps surprisingly  does not actually recognise the concept of a  keyboard   albeit it does have a standard for  console input    There are various ways to achieve it on different operating systems  see herohuyongtao s solution  but it is not portable across all platforms that support keyboard input   Remember that C    and C  are devised to be languages that can run on embedded systems that do not have keyboards   Having said that  an embedded system might not have various other devices that the standard library supports    This matter has been debated for a long time

User · Answer

a do while loop would be a nice way to wait for the user input  Like this   int main        do        cout  lt  lt    n   lt  lt   Press a key to continue         while  cin get        n      return 0      You can also use the function system  PAUSE   but I think this is a bit slower and platform dependent

[c++] C++ wait for user input

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