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Language in C Interview Questions and Answers

Question: How do I write code that executes certain function only at program termination?
Answer: Use atexit( ) function as shown in following program.

#include <stdlib.h>
main( )
{
int ch ;
void fun ( void ) ;
atexit ( fun ) ;
// code
}
void fun( void )
{
printf ( "nTerminate program......" ) ;
getch( ) ;
}

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