atexit

atexit
Example
This program pushes four functions onto the stack of functions to be executed when atexit is called. When the program exits, these programs are executed on a last in, first out basis.
// crt_atexit.c
#include
#include
void fn1( void ), fn2( void ), fn3( void ), fn4( void );
int main( void )
{
atexit( fn1 );
atexit( fn2 );
atexit( fn3 );
atexit( fn4 );
printf( "This is executed first.\n" );
}
void fn1()
{
printf( "next.\n" );
}
void fn2()
{
printf( "executed " );
}
void fn3()
{
printf( "is " );
}
void fn4()
{
printf( "This " );
}
Output
This is executed first.
This is executed next.