Why it says error some one help!!

Question

https://code.sololearn.com/c7rPUmnDp1iy/?ref=app

Answer 1

There's an extra " in line 6, which is why it's not compiling. Also, n1 doesn't have an assigned value when you use it. I think you meant to output it in line 8.
So, change line 6 to:
cout << "Enter first number: " << endl;

Answer 2

Line 8, character 32: ' " ' - double quote is superfluou, delete it.
Because of it, the compiler gives an error.

8. cout << "first number is"<<n1<<¿😕"☺?endl;

https://code.sololearn.com/cSgNzPA7cawA/?ref=app

Answer 3

At last, the int main() function must also return a value!

Answer 4

line 8: remove " before endl;
line 9: put return 0; before }