quick_exit() function in C++ with Examples

The quick_exit() function is defined in the stdlib header file. The quick_exit() function is used for normal termination of a process without completely cleaning the resources.

• If val is zero or EXIT_SUCCESS, it shows successful termination of program.
• If the value is non-zero or EXIT_FAILURE, it shows that the program is not successfully terminated. These functions are called in the reverse order of their calling.

Syntax:

void quick_exit(int val);

Parameter: This method takes a single parameter val which is an integral value that represent the exit status of a program. Return Value: This function doesn’t returns anything.

Time Complexity: O(1)
Auxiliary Space: O(1)

Below program illustrate the quick_exit() function in C++: 

Example:-

cpp

// c++ program to demonstrate
// example of quick_exit() function.

#include <bits/stdc++.h>
using namespace std;

void function1()
{
    cout << "Exit Function 1" << endl;
}
void function2()
{
    cout << "Exit Function 2" << endl;
}

int main()
{
    // registering function
    at_quick_exit(function1);
    at_quick_exit(function2);

    quick_exit(0);
    return 0;
}

Output:

Exit Function 2
Exit Function 1