My code will only use multiplication even if the user prompts the program to use
ID: 3801314 • Letter: M
Question
My code will only use multiplication even if the user prompts the program to use a different arithmetic. How can i fix that?
Also, my percentage variable in the generateProblem function is not working, if i get a single problem wrong, it resets the difficulty. it should let me continue if i score a 75% or higher.
//Gage Pelon
//Project 1
#include <iostream>
#include <stdlib.h>
#include <cstdbool>
#include <math.h>
using namespace std;
//Prototypes
bool multiplication(int num1, int num2);
bool addition(int num1, int num2);
bool subtraction(int num1, int num2);
bool division(int num1, int num2);
int menu();
int reset(int currentLevel);
void right();
void wrong();
bool generateProblem(int level);
//Function to compute multiplication
bool multiplication(int num1, int num2)
{
int useranswer;
cout << num1 << " * " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1*num2))
return true;
else
return false;
}
//Function to compute addition
bool addition(int num1, int num2)
{
int useranswer;
cout << num1 << " + " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1+num2))
return true;
else
return false;
}
//Function to compute subtraction
bool subtraction(int num1, int num2)
{
int useranswer;
cout << num1 << " - " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1-num2))
return true;
else
return false;
}
//Function to compute division
bool division(int num1, int num2)
{
int useranswer;
cout << num1 << " / " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1/num2))
return true;
else
return false;
}
//Function to choose difficulty and arithmetic type
int menu()
{
int arithmetic, i, lvl;
cout << "Welcome to CAI" << endl << endl;
cout << "Please choose one of the following: " << endl;
cout << " 1. Addition 2. Subtraction 3. Multiplication 4. Division 5. Random ";
cin >> arithmetic;
cout << "Enter the level of difficulty that you would like to start at: ";
cin >> lvl;
generateProblem(lvl);
cout << endl;
switch (arithmetic)
{
case 1:
bool addition(int num1, int num2);
break;
case 2:
bool subtraction(int num1, int num2);
break;
case 3:
bool multiplication(int num1, int num2);
break;
case 4:
bool division(int num1, int num2);
break;
case 5:
i = rand() % 4;
if (i == 0)
{
bool addition(int num1, int num2);
break;
}
else if (i == 1)
{
bool subtraction(int num1, int num2);
break;
}
else if (i == 2)
{
bool multiplication(int num1, int num2);
break;
}
else if (i == 3)
{
bool division(int num1, int num2);
break;
}
break;
}
return 1;
}
// Resets current level to 1 if student does not pass that level.
int reset(int currentLevel)
{
currentLevel = 1;
return currentLevel;
}
//Function for right answers
void right()
{
int r;
r = rand() % 4;
cout << endl;
switch (r)
{
case 0:
cout << "Very good! ";
break;
case 1:
cout << "Excellent! ";
break;
case 2:
cout << "Nice work! ";
break;
case 3:
cout << "Keep up the good work! ";
break;
}
cout << endl;
}
//Function for wrong answers
void wrong()
{
int w;
w = rand() % 4;
cout << endl;
switch (w)
{
case 0:
cout << "No. Please try again. ";
break;
case 1:
cout << "Wrong. Try once more. ";
break;
case 2:
cout << "Don't give up! ";
break;
case 3:
cout << "No. Keep trying. ";
break;
}
cout << endl;
}
//Generates problem
bool generateProblem(int level)
{
srand(time_t(0));
int MAXIMUM_TRIES = 10;
int qustionCount = 1;
double percentage;
int correct = 0;
bool success = false;
int min = (int)pow(10.0, level - 1);
int max = (int)(pow(10.0, level) - min + 1);
//Generate two random numbers based on level
//Level -Random numbers in between 1 to 9
//Leve2 -Random numbers in between 10 to 99
//Leve3 -Random numbers in between 100 to 999
//Leve4 -Random numbers in between 1000 to 9999
//and so on...
int num1 = rand() % max + min;
int num2 = rand() % max + min;
cout << "Level " << level << endl << endl;
while (qustionCount <= MAXIMUM_TRIES)
{
if (multiplication(num1, num2))
{
right();
//Increment the question count
qustionCount++;
//increment the correct answer count
correct++;
num1 = rand() % (max - min) + min;
num2 = rand() % (max - min) + min;
}
else
{
wrong();
//Increment the question count
qustionCount++;
}
}
//calculate the percentage of correct answers
percentage = (correct / MAXIMUM_TRIES) * 100;
if (percentage >= 75)
{
cout << "Congratulations, you are ready for the next level! " << endl;
success = true;
}
else
{
cout << "Please ask your teacher for extra help. " << endl;
success = false;
}
return success;
}
//Main function
int main()
{
int LEVEL, currentLevel;
LEVEL = 1;
currentLevel = LEVEL;
menu();
//The while loop continues playing the game for different levels
while (true)
{
//generate two random numbers based on currentLevel
bool success = generateProblem(currentLevel);
if (success)
{
//Increment the LEVEL by one
LEVEL++;
//set currentLevel to LEVEL
currentLevel = LEVEL;
}
else
{
currentLevel = reset(currentLevel);
cout << "Next Student " << endl;
}
}
}
Explanation / Answer
/*
My code will only use multiplication even if the user prompts the program to use a different arithmetic.How can i fix that ?
Also, my percentage variable in the generateProblem function is not working,
if i get a single problem wrong, it resets the difficulty.
it should let me continue if i score a 75 % or higher.
*/
/*
Asnwer1. Corrected calls using function pointer, now appropriate function will be invoked.
Answer2. Percentage variable is double, so if we get 2 correct out of 3, so arithmetic operation makes it to 0 and then multiply by 100
So to solve this, typecast correct variable to double and then do the calculation. This will do calculation correctly.
Answer3. Resets difficulty problem also corrected.
Answer4. Now program lets user continue when more than 75% problems are correct.
*/
//Gage Pelon
//Project 1
#include <iostream>
#include <stdlib.h>
#include <cstdbool>
#include <math.h>
using namespace std;
//Prototypes
bool multiplication(int num1, int num2);
bool addition(int num1, int num2);
bool subtraction(int num1, int num2);
bool division(int num1, int num2);
int menu();
int reset(int currentLevel);
void right();
void wrong();
bool generateProblem(int level);
bool (*functionptr)(int a, int b);
bool init_success = false;
//Function to compute multiplication
bool multiplication(int num1, int num2)
{
int useranswer;
cout << num1 << " * " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1*num2))
return true;
else
return false;
}
//Function to compute addition
bool addition(int num1, int num2)
{
int useranswer;
cout << num1 << " + " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1 + num2))
return true;
else
return false;
}
//Function to compute subtraction
bool subtraction(int num1, int num2)
{
int useranswer;
cout << num1 << " - " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1 - num2))
return true;
else
return false;
}
//Function to compute division
bool division(int num1, int num2)
{
int useranswer;
cout << num1 << " / " << num2 << " = ";
cin >> useranswer;
if (useranswer == (num1 / num2))
return true;
else
return false;
}
//Function to choose difficulty and arithmetic type
int menu()
{
int arithmetic, i, lvl;
cout << "Welcome to CAI" << endl << endl;
cout << "Please choose one of the following: " << endl;
cout << " 1. Addition 2. Subtraction 3. Multiplication 4. Division 5. Random ";
cin >> arithmetic;
cout << "Enter the level of difficulty that you would like to start at: ";
cin >> lvl;
// functionptr = multiplication;
// generateProblem(lvl);
// cout << endl;
#if 1
switch (arithmetic)
{
case 1:
functionptr= &addition;
break;
case 2:
functionptr = &subtraction;
break;
case 3:
functionptr = &multiplication;
break;
case 4:
functionptr = &division;
break;
case 5:
i = rand() % 4;
if (i == 0)
{
functionptr = &addition;
break;
}
else if (i == 1)
{
functionptr = &subtraction;
break;
}
else if (i == 2)
{
functionptr = &multiplication;
break;
}
else if (i == 3)
{
functionptr = &division;
break;
}
break;
}
#endif
generateProblem(lvl);
cout << endl;
return 1;
}
// Resets current level to 1 if student does not pass that level.
int reset(int currentLevel)
{
currentLevel = 1;
return currentLevel;
}
//Function for right answers
void right()
{
int r;
r = rand() % 4;
cout << endl;
switch (r)
{
case 0:
cout << "Very good! ";
break;
case 1:
cout << "Excellent! ";
break;
case 2:
cout << "Nice work! ";
break;
case 3:
cout << "Keep up the good work! ";
break;
}
cout << endl;
}
//Function for wrong answers
void wrong()
{
int w;
w = rand() % 4;
cout << endl;
switch (w)
{
case 0:
cout << "No. Please try again. ";
break;
case 1:
cout << "Wrong. Try once more. ";
break;
case 2:
cout << "Don't give up! ";
break;
case 3:
cout << "No. Keep trying. ";
break;
}
cout << endl;
}
//Generates problem
bool generateProblem(int level)
{
//menu();
srand(time_t(0));
int MAXIMUM_TRIES = 2;
int qustionCount = 1;
double percentage;
int correct = 0;
bool success = false;
int min = (int)pow(10.0, level - 1);
int max = (int)(pow(10.0, level) - min + 1);
//Generate two random numbers based on level
//Level -Random numbers in between 1 to 9
//Leve2 -Random numbers in between 10 to 99
//Leve3 -Random numbers in between 100 to 999
//Leve4 -Random numbers in between 1000 to 9999
//and so on...
int num1 = rand() % max + min;
int num2 = rand() % max + min;
cout << "Level " << level << endl << endl;
while (qustionCount <= MAXIMUM_TRIES)
{
if (functionptr(num1, num2))
{
right();
//Increment the question count
qustionCount++;
//increment the correct answer count
correct++;
num1 = rand() % (max - min) + min;
num2 = rand() % (max - min) + min;
}
else
{
wrong();
//Increment the question count
qustionCount++;
}
}
//calculate the percentage of correct answers
percentage = ((double)correct / MAXIMUM_TRIES) * 100;
if (percentage >= 75)
{
if (init_success == false)
init_success = true;
cout << "Congratulations, you are ready for the next level! " << endl;
success = true;
}
else
{
cout << "Please ask your teacher for extra help. " << endl;
success = false;
}
return success;
}
//Main function
int main()
{
int LEVEL, currentLevel;
LEVEL = 1;
currentLevel = LEVEL;
menu();
//The while loop continues playing the game for different levels
while (true)
{
//generate two random numbers based on currentLevel
if (init_success == true)
currentLevel = LEVEL + 1;
bool success = generateProblem(currentLevel);
if (success)
{
//Increment the LEVEL by one
LEVEL++;
//set currentLevel to LEVEL
currentLevel = LEVEL;
}
else
{
currentLevel = reset(currentLevel);
cout << "Next Student " << endl;
}
}
}
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.