How to create and run C++ files on playground

Open a standard C/C++ project. Call it whatever you want. Create it. Rename the main.c file to main.cpp.

In the "main.cpp" file change:

#include <stdio.h>

int main() {

printf("Hello World\n");

return 0;

}

to:

#include <iostream>

using namespace std;

int main() {

cout<<"Hello World"<<endl;
return 0;
}

In the ".cdmrc" file change:

tabs: ['main.c']

run-button: gcc main.c -o main.out && ./main.out

to:

tabs: ['main.cpp']

run-button: g++ main.cpp -o output_file && ./output_file

and then reload your project.

It should print "Hello World" into the console.