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C++ Reference: atexit()
atexit()
Declaration
int atexit(void (*pfnFunctionPtr)( void ));
Description
Adds a function to the call stack of functions to be called when the program exists. The function, atexit(), takes a function pointer as its argument. It returns 0 if the sucessful, or a nonzero result if it fails. The argument function pointer type takes a void and returns a void.
Example
#include <iostream>
#include <cstdlib>
void First() {
std::cout << "1" << std::endl;
}
void Second() {
std::cout << "2" << std::endl;
}
void Third() {
std::cout << "3" << std::endl;
}
int main() {
using namespace std;
atexit(First);
atexit(Second);
atexit(Third);
cout << "The functions are called when we return" << endl;
cout << "and in reverse order." << endl;
return 0;
}
Output:
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