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Else If statements unable to compile – "error: expected ';' before '{' token"

July 28, 2024

I am new. Please excuse me.
When compiling the following code that is entirely ‘if’ statements, the final "else" statement does not work. I receive the error message as mentioned in the title. If I change the final "else" to an "else if" the code will run. This makes no sense to me as I was told that the final statement should just be "else". Thanks for any help.

#include <iostream>
using namespace std;

int main() {
  int menu, number1, number2;
  double sum;

  cout << "1: Addition\n2: Division\n\n";
  cin >> menu;

  if(menu == 1){    //Addition
    cout << "gimme a num: ";
    cin >> number1;
    cout << "gib another: ";
    cin >> number2;
    sum = number1 + number2;
    cout << sum;
  }else(menu == 2){     //division       !THIS IS THE LINE IN QUESTION!
    cout << "gimme a num: ";
    cin >> number1;
    cout << "gib another: ";
    cin >> number2;
    sum = number1 / number2;
    cout << sum;
  }

  return 0;
}