#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

char *questions[10][5] = {
	{ "What is the smallest unit in the computer system.", "Block", "Byte", "Bit", "C" },
	{ "What is the most widely used device in the computer..", "Solid state disks", "Mouse", "Hard drive", "C" },
	{ "WWW stands for.", "Wan Wide World.", "World Wide Web", "Wide Wan Web", "B" },
	{ "What software is used to view web pages.", "Internet", "Web Browser", "Page Browser", "B" },
	{ "Which one is a word processor.", "Notepad.", "Excel", "Word Perfect", "C" },
	{ "How many bits are there in one byte.", "6", "8", "4", "B" },
	{ "ISP stands for.", "International Service Provide", "Internet Service Printer", "Internet Service Provider", "C" },
	{ "How many bytes are there in 2040 bits.", "255", "1024", "100", "A" },
	{ "Every number system has a base, that is called", "Index", "Radix", "Subscript", "B" },
	{ "A device that converts digital signals to analog signals is", "Packet", "Modem", "Block", "B" }
};

const int QUESTIONS = 10;

int cur_question = 0;
int Correct = 0;

void ShowQuestion(int index){
    printf("%s\n\n",questions[index][0]);
}

void ShowAnswers(int qIndex){
    printf("%s\n\n",questions[qIndex][0]);
    printf("[A] %s\n",questions[qIndex][1]);
    printf("[B] %s\n",questions[qIndex][2]);
    printf("[C] %s\n",questions[qIndex][3]);
    printf("\nPlease enter a answer: ");
}

void CheckAnswer(int qIndex, char Answer){
    if(questions[qIndex][4][0] == Answer){
        Correct++;
    }
}

int main()
{
    char Answer;

    while(cur_question < QUESTIONS){
        //Show question
        //Show answers
        ShowAnswers(cur_question);
        //Get answer
        scanf(" %c",&Answer);
        printf("\n");
        //Convert to uppercase
        Answer = toupper(Answer);
        //Check answer.
        CheckAnswer(cur_question,Answer);
        //INC counter
        cur_question++;
        //Add a small line break
    }

    if(Correct == 1)
    {
        printf("\nYou got %d answer correct\n",Correct);
    }else{
        printf("\nYou got %d answers correct\n",Correct);
    }

    return 0;
}