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main() function is the entry point of any C++ program. It is the point at which execution of program is started. When a C++ program is executed, the execution control goes directly to the main() function.

#include using namespace std; void anotherfunction()//function with void return type { cout<<"another function"<
Output: here's where your program starts another function here's where your program ends!!! It starts and ends in main!!!!

This program demonstrates how program execution starts and ends in main function.