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#include #include #include int main() { return 0; } void *(*p)(void *) = NULL; // proc_system_time(); void *(*p)(void *) = NULL; - p is a pointer to a function that takes a single argument, a void pointer. It returns no value and has no parameters. The function in question will be executed when the program reaches this position. The line in the context of the proc_system_time() call would print out something like "Jan 1, 2006 10:06pm" for US time zones or "Mon Jan 01 22:06:10 UTC 2006" for international time zones. The program then exits. #include #include int main() { return 0; } void *p = NULL; // Set up a pointer to the function that will print the time. // This is a convention for displaying real-time values, such as date and times of day, so that it is possible to show the output right away on screen, rather than needing to open another window and wait for it to print. #include #include int main() { // this is the function that prints the date and time // Note: This code must be called from the main() function. Remember to return 0 to proceed, otherwise your program will exit and won't print anything! // Note: This code must be called from the main() function. Remember to return 0 to proceed, otherwise your program will exit and won't print anything! // now we set p as a pointer to this function. You can display now on screen all those values that we just printed. // p is a pointer to the function that prints the date and time // Note: This code must be called from the main() function. Return 0 to proceed, otherwise your program will exit and won't print anything! } //Example 2 (C++) // When #include is included, every system defined enumeration type will be automatically converted into a runtime type, thus freeing memory during run-time, which is not possible with dynamic types (#defined). The compiler automatically takes care of converting all your typedefs into runtime types through usage of enumerations. All other standard C++ features should also work as before. cfa1e77820
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