Dev How To Stop Program Console From Closing C
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- Dev How To Stop Program Console From Closing C Section
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In C++, you can exit a program in these ways:
- Call the exit function.
- Call the abort function.
- Execute a return statement from
main.
When I compile and run my program as a console project, a window flashes very briefly on the screen and disappears. The compile log says compilation was successful and execution terminated. You have to add a line just before the end of main to stop the program from closing. Most people call getch. Dec 24, 2016 program keeps popping up and closing I just got windows 10 yesterday. The problem is that something keeps opening and closing really quickly but I don't know what it is and it is getting annoying.
Aug 25, 2010 How to stop the output console from closing after running your C program. Pausing a console program the right way - Duration. 5 tips to debug c# program using visual studio 2010. To close the program, the user must manually close the console window. Otherwise, the program always waits for new input. The cin keyword is used to accept input from the user. This input stream is smart enough to process a line of text entered in the console window and place it inside each of the variables listed, in order, assuming the user. May 28, 2008 An even simpler way to keep the console from closing immediately after the code has run is to declare an int (for example 'i') then put the following line just before the 'return 0;':- std::cin i; All you have to do then to close the console is input a number when you're ready. Oct 17, 2013 Probably the best solution: code std::cin.get; /code Drop that line and the console will pause and wait for the user to press enter. Just for fun, here's the C. You want to close the console window? Normally this is not the responsibility of the program to do so. A standard C program can run without a console window and instead read and write the IO to files, or elsewhere depending on the how the user wants to run it. That said, there might be some platform dependent function that can do it.
exit function
The exit function, declared in <stdlib.h>, terminates a C++ program. The value supplied as an argument to exit is returned to the operating system as the program's return code or exit code. By convention, a return code of zero means that the program completed successfully. You can use the constants EXIT_FAILURE and EXIT_SUCCESS, also defined in <stdlib.h>, to indicate success or failure of your program.
Issuing a return statement from the main function is equivalent to calling the exit function with the return value as its argument.
abort function
The abort function, also declared in the standard include file <stdlib.h>, terminates a C++ program. The difference between exit and abort is that exit allows the C++ run-time termination processing to take place (global object destructors will be called), whereas abort terminates the program immediately. The abort function bypasses the normal destruction process for initialized global static objects. It also bypasses any special processing that was specified using the atexit function.
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atexit function
Use the atexit function to specify actions that execute prior to program termination. No global static objects initialized prior to the call to atexit are destroyed prior to execution of the exit-processing function.
return statement in main
Issuing a return statement from main is functionally equivalent to calling the exit function. Consider the following example:
Dev How To Stop Program Console From Closing Center
The exit and return statements in the preceding example are functionally identical. However, C++ requires that functions that have return types other than void return a value. The return statement allows you to return a value from main.
Destruction of static objects
When you call exit or execute a return statement from main, static objects are destroyed in the reverse order of their initialization (after the call to atexit if one exists). The following example shows how such initialization and cleanup works.
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Example
In the following example, the static objects sd1 and sd2 are created and initialized before entry to main. After this program terminates using the return statement, first sd2 is destroyed and then sd1. The destructor for the ShowData class closes the files associated with these static objects.
Dev How To Stop Program Console From Closing C Section
Another way to write this code is to declare the ShowData objects with block scope, allowing them to be destroyed when they go out of scope: