What's causing the error?

Question

its not yet completed, please review.....

https://code.sololearn.com/cG4Q6qKPqtO9/?ref=app

Answer 1

Hi! You can read the comments:

#include <iostream>
using namespace std;

int main() {

cout << "Welcome to the quiz, Would you like you know the rules?" << endl;
Options:
cout << "Enter y for yes or n for no" << endl ;
string rulesopt;
cin>>rulesopt;

if(rulesopt == "y"){
cout << "You would be asked 5 questions and for every right answer, you would get 1 point.SimPle!" << endl;
}

if (rulesopt == "n"){
cout << "I assume you already know the rules, so lets head over to the game now ....!"<<endl;
}
if(rulesopt != "n" && rulesopt!= "y") {
cout <<endl<<endl<< "Please choose a valid option.";
goto Options ;
}

Quiz:

int a,b; //You need to declare a and b here
//if this is here you can use it in all place in your code.

cout << endl << endl << "Question 1" << endl << "What is 2+2?" << endl;
string ans1;
cin>>ans1; //Here needs ;
if(ans1 == "4"){
cout << "Right answer...

Answer 2

cout << "Right answer...That was an easy one!"<<endl;
a=1;

}
else{
cout<< "BEEP! Looks like that was a wrong answer,Better luck next time.... "<<endl;
a = 0;
}

cout << endl << endl << "Question 2"<< endl << "Which one out of these is a leap year: 1600 or 1800"<<endl;
string ans2 ;
cin>>ans2;
if(ans2 == "1600"){
cout << "Congo! RigHt AnSweR";
b = 1;
}
if(ans2 != "1600"){
cout << "Looks like you chose the wrong ans..."<<endl;
b = 0;
}
//Now you avoid the error here
//Because a and b are not inside of the conditional if;
int sum = a+b;
cout << sum;

return 0;
}

/*
Remember, this compiler needs all inputs when the code is starting.
*/