Someone please help with my c++ code (I am beginner :()

Question

So this is my code

#include <iostream>

int main() {

//start
std::cout << "Welcome to the volume calculator for rectangles and squares!\n\n\n";

int height;
std::cout << "Inter Height: ";
std::cin >> height;
std::cout << "\n";

int width;
std::cout << "Inter Width: ";
std::cin >> width;
std::cout << "\n";

int length;
std::cout << "Inter Length: ";
std::cin >> length;
std::cout << "\n";

int volume = width * height * length;
std::cout << "The volume is: " << volume;

return 0;

}

Whenever I try to run it,it just shows:
Undefined symbols for architecture x86_64:
"_main", referenced from:
implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation

I am so confused.

UPDATE:
Thank you everyone for your answers. It turns out there was a problem with my IDE but now it is fixed.

Answer 1

https://code.sololearn.com/cXOh0tUYySuA/?ref=app

The code runs fine in the playground.

Please check that all braces ( { } ) have a counterpart. and are in the right place.
Make sure you have a main method in your program
And check all semicolons

and everything that ace and kit have said

keep coding, keep asking, you are doing well

Answer 2

Why don't you use ' using namespace std ' , Perhaps this help you and fixed the problem !!

Answer 3

im also new