What is the reason?

Question

When I running my program,without any result,the CMD window open for a moment then close.so I can't see my result of program

Answer 1

This is because the program terminates after running. The simply way to solve this is to add a function which holds the output screen until the user decides to terminate the program. E.g.

system("pause");
getch();
getchar();
etc

Answer 2

use any of d functions to hold d screen before any next char input...
like
getch();

Answer 3

why the program terminates after running???