How to write/compile/run c++ program on ubuntu

In this video you can learn how to write ,compile and run a C++ program on Ubuntu operating system.

If you want to learn basic Ubuntu terminal commands then watch this video

If you want to learn basic Windows command prompt commands in windows operating system then watch this video

[FileFN]

What dose your output file name come in?

[kychemclass]

Any suggestions??
"./test.cpp: line 3: syntax error near unexpected token `('
./test.cpp: line 3: `int main() {'"

for
#include <iostream>

int main() {
std::cout << "Hello World!";
return 0;
}