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atexit

From cppreference.com
< c‎ | program
Revision as of 06:34, 7 June 2013 by Eendy (Talk | contribs)

Defined in header <stdlib.h>
int atexit( void (*func)() );

Registers the function pointed to by func to be called on normal program termination (via Template:rlpf or returning from main()).

Calling the function from several threads does not induce a data race. The implementation shall support the registration of at least 32 functions.

Contents

Parameters

func - pointer to a function to be called on normal program termination

Return value

0 if the registration succeeds, nonzero value otherwise.

Example

#include <stdlib.h>
#include <stdio.h>
 
void f1()
{
    puts("pushed first");
}
 
void f2()
{
    puts("pushed second");
}
 
int main()
{
    atexit(f1);
    atexit(f2);
}

Output:

pushed second
pushed first

See also

registers a function to be called on quick_exit invocation
(function) [edit]