Code

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


int input();
int addition(int number1, int number2);
int multiplication(int number1, int number2);


int main()

{
	time_t t;
	int number1, number2, answer, userAnswer;
	int score = 0;
    int prevScore = 0;
    int i = 0;
    char optionTwo = 'E';
    char option;
    int none[5];
	int ntwo[5];


	srand((unsigned)time(&t));

	while(optionTwo == 'E')
	{
    option = input();

	switch(option)
		{
			case 'A': for(i=0;i<5;i++)
				{
				number1 = rand()%10;
				number2 = rand()%10;
				answer = addition(number1,number2);
				printf("\n\nYour current score is: %d of %d\n", score, i);
			    printf("What is %d + %d?\n", number1, number2);
			    printf("Your answer:");
				scanf("%d", &userAnswer);

				if (answer == userAnswer)
					{
					printf("Correct!\n");
					score = prevScore + 1;
					prevScore = score;
					}

				else
					{
					printf("Incorrect. The correct answer was %d\n\n", answer);
					none[i] = number1;
					ntwo[i] = number2;
					}
				}
				break;

			case 'M': for(i=0;i<5;i++)
				{
				number1 = rand()%10;
				number2 = rand()%10;
				answer = multiplication(number1,number2);
				printf("\n\nYour current score is: %d\n", score);
			    printf("What is %d x %d?\n", number1, number2);
			    printf("Your answer:");
				scanf("%d", &userAnswer);

				if (answer == userAnswer)
					{
					printf("Correct!\n");
					score = prevScore + 1;
					prevScore = score;
				    }

				else
					{
					printf("Incorrect. The correct answer was %d\n\n", answer);
					none[i] = number1;
					ntwo[i] = number2;
					}
				}
			 	break;

			case 'Q': printf("Thank your for playing.");
			    return(0);


			default: printf("You entered an invalid option. The program will now terminate.\n");
				return (0);
		}

	printf("\n\nYour total score is: %d of %d. You got the following questions wrong.\n", score, i);

	for(i=0;i<5;i++)
	{
		printf("Question [i]: none[i]+ntwo[i]");
	}


	printf("Press (E) to exit this session.");
	printf("Your choice:");
	scanf(" %c", &optionTwo);
	}


return 0;
}

int input()
{
	char option;
	printf("\n\n**************************************************************************************************************\n");
	printf("*                                      ~~  Math Flash Card Game ~~                                           *\n");
	printf("*                                                                                                            *\n");
	printf("* Please choose what type of game mode you would like to eneter.                                             *\n");
	printf("*                                                                                                            *\n");
	printf("* (A) Addition                                                                                               *\n");
	printf("* (M) Multiplication                                                                                         *\n");
	printf("* (Q) Quit                                                                                                   *\n");
	printf("*                                                                                                            *\n");
	printf("**************************************************************************************************************\n");

	printf("Your option:");
	scanf("%c", &option);

	return option;
}

int addition(int number1, int number2)
{
	int answer;
	answer = number1 + number2;
	return answer;
}

int multiplication(int number1, int number2)
{
	int answer;
	answer = number1 * number2;
	return answer;
}