#include <iostream>
#include <string>

using namespace std;

int main()
{
    int number_incorrect=0, number_correct=0, total_questions=0, point_value, score=100;
    string name;
    char answer;
    
    
    cout<<"\n\nWelcome to CET PRETEST";
    cout<<"\nWhat is your name:";
    cin>>name;

//must not have 3 questions    
    
    cout<<"\n\nGet ready "<<name<<endl;
    ++total_questions;
    cout<<"\n\nQuestion 1:\nA computer takes _____ and gives ______.";
    cout<<"\n    A) AC-AC \n    B) AC-DC \n    C) DC-AC \n    D) DC-DC";
    cout<<"\nYour answer:";
    cin>>answer;
    cout<<"\ncorrect answer: B"<<endl;
    if (answer == 'B' || answer=='b')
        ++number_correct;
        
    
    else
        ++number_incorrect;

    
    cout<<"\ntotal correct:"<<number_correct<<endl;
    
    ++total_questions;
    cout<<"\n\nQuestion 2:\nCMOS stands for:";
    cout<<"\n\n    A) Computer Made On Service\n    B) Computer Mode Onside Service\n    ";    
    cout<<"C) Complementry Metal Oxcide Semicunductor\n    D) Computer Mode Online Service";
    cout<<"\nEnter your Answer:";
    cin>>answer;
    cout<<"\ncorrect answer: C"<<endl;
    if (answer == 'C' || answer=='c')
        ++number_correct;
    
    
    else
        ++number_incorrect;
    
    cout<<"\nTotal correct:"<<number_correct<<endl;
    
    ++total_questions;
    cout<<"\n\nQuestion3:\nSIMM stands for what?";
    cout<<"\n\n A) single inline memory module\n B)    standard intergrated memory mode\n C)    Standard inline mmory mode\n D)    seriously infected motherboard mainframe"<<endl;
    cout<<"Your answer:";
    cin>>answer;
    cout<<"\ncorrect answer: A";
    if (answer == 'A' || answer =='a')
        ++number_correct;
    else
        ++number_incorrect;
    
    cout<<"\n Total correct:"<<number_correct<<endl;
    
    ++total_questions;
    cout<<"\n\nQuestion"<<total_questions<<"\nA floppy drive cable has how many pins?";
    cout<<"\n\n A) 20\n B) 30\n C) 32\n D) 40"<<endl;
    cout<<"Your answer:";
    cin>>answer;
    cout<<"correct answer: C";
    if (answer=='C' || answer=='c')
        ++number_correct;
    else
        ++number_incorrect;
    cout<<"\nTotal correct:"<<number_correct<<endl;
    cout<<"\nTotal incorrect:"<<number_incorrect<<endl;
    
    
    

//score
    point_value=100/total_questions;//100 divided by 2 = 50
    score=point_value*number_correct;//50 times number correct
    cout<<"\n\nYour score is: "<<score<<endl;

return 0;
}

set myVariable to 6 + 9