Which of the following is the correct basic structure for a C++ program?

#include
using namespace std;
void main() { }
#include
int main() { cout << "Hello"; }
#include
using namespace std;
int main() { return 0; }
import
int main() { }

The standard structure for a C++ program begins with the inclusion of the iostream header, followed by the "using namespace std;" directive. The entry point of a C++ program is the "main()" function, and it should return an integer. The correct structure uses #include (without .h) and returns a value (typically 0) from the main function.

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