Question

In: Computer Science

hello! So I have this CIS assignment lab but when I try to make the code...

hello! So I have this CIS assignment lab but when I try to make the code I don't really know where to start from. My professor is very hard and he likes to see the outcomes as they are shown in the problem. Please help me! the program should be a C++ PLS

Write a program that can be used as a math helper for an elementary student. The program should display two random integer numbers that are to be added, such as:
    247
+ 129
-------

The program should wait for the students to enter the answer. If the answer is correct, a message of congratulations should be printed. If the answer is incorrect, a message should be printed showing the correct answer.

The program displays a menu allowing the user to select an addition, subtraction, multiplication, or division problem. The final selection on the menu should let the user quit the program. After the user has finished the math problem, the program should display the menu again. This process is repeated until the user chooses to quit the program.
Input Validation: If the user select an item not on the menu, display an error message and display the menu again.

Requirements:

Addition
Generate two random numbers in the range 0 - 9.

Subtraction

Generate two random numbers in the range 0 - 9.
num1 = rand() % 10;
num2 = rand() % 10;
Make sure num2 <= num1...
while (num2 > num1)
num2 = rand() % 10;

Multiplication

Generate two random numbers. The first in the range 0 - 10, the second in the range 0 - 9.

Division

Generate a single digit divisor
num2 = rand() % 9;
Generate a num1 that is a multiple of num2 so the division has no remainder. The num1 is never zero.
num1 = num2 * (rand() % 10 + 1);

All constant values must be declare as a constant variable. Use the constant variable in the calculation.
Validating the selection (1 to 5). If the selection is not in the range between 1 and 5, the program keeps asking the input until the correct selection is entered.
Comments in your program to explain the code logic and calculation.


Output sample:

Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program

Enter your choice (1-5): 1
   1
+ 2
   ---
   4

Sorry, the correct answer is 3.
Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program
Enter your choice (1-5): 7
The valid choices are 1, 2, 3, 4, and 5. Please choose: 2
    8
+ 6
    ---
    2
Congratulations! That's right.
Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program
Enter your choice (1-5): 3
     9
*   4
    ---
   36

Congratulations! That's right.
Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program
Enter your choice (1-5): 4
8 / 2 = 4
Congratulations! That's right.
Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program
Enter your choice (1-5): 4
6 / 2 = 3
Congratulations! That's right.
Menu
1. Addition problem
2. Subtraction problem
3. Multiplication problem
4. Division problem
5. Quit this program
Enter your choice (1-5): 5

"Thank you for using math helper!"

Solutions

Expert Solution

#include <iostream>

using namespace std;

int main()
{
int ch=0,n1,n2,result=0;//initialize all values
const int randdiv=10;//this is constant variable for dividing the rand function to get values b/w 1 to 10
cout<<"1.Addition\n2.Subtraction\n3.Multiplication\n4.Division\n5.Quit"<<endl;//menu
cin>>ch;//read one choice
while(ch!=5)//if it is 5.quit then it quits otherwise it loops around
{
  
switch(ch)//passing the choice to switch to perform correct operations
{
case 1:n1=rand()%randdiv;//generating random number for n1
n2=rand()%randdiv;//generating random number for n2
cout<<" "<<n1<<"\n+"<<n2<<"\n-----------------"<<endl;//printing the question to console
cin>>result;//get the answer from them
if(n1+n2==result)//check the result if we get the correct or not
cout<<"That's correct"<<endl;//if correct print correct
else
cout<<"Sorry!The correct answer is "<<(n1+n2)<<endl;//if it is wrong print the correct answer
break;
case 2:n1=rand()%randdiv;
n2=rand()%randdiv;//generating random number for n2
while(n2>n1)//we have to get the number less than n1
n2=rand()%randdiv;//so we do this until we get lesser number than n1
cout<<" "<<n1<<"\n-"<<n2<<"\n-----------------"<<endl;//printing question
cin>>result;//getting answer
if(n1-n2==result)//comparing result
cout<<"That's correct"<<endl;
else
cout<<"Sorry!The correct answer is "<<(n1-n2)<<endl;
break;
case 3:n1=rand()%randdiv;//generating random number for n1
n2=rand()%randdiv;
cout<<" "<<n1<<"\n*"<<n2<<"\n-----------------"<<endl;//printing question
cin>>result;//getting answer
if(n1*n2==result)//comparing result
cout<<"That's correct"<<endl;
else
cout<<"Sorry!The correct answer is "<<(n1*n2)<<endl;
break;
case 4:n2=rand()%9;//getting random number for n2 first as a single digit
n1=n2*(rand()%randdiv+1);//after that multiply by n2 so we leave remainder as 0
cout<<" "<<n1<<"\n/"<<n2<<"\n-----------------"<<endl;//printing question to student
cin>>result;//getting the answer from student
if(n1/n2==result)//comparing result
cout<<"That's correct"<<endl;
else
cout<<"Sorry!The correct answer is "<<(n1/n2)<<endl;
break;
default:cout<<"Wrong choice Please select again"<<endl;//if it is other than that choice it again prompts for input
}
cout << "1.Addition\n2.Subtraction\n3.Multiplication\n4.Division\n5.Quit" <<endl;//taking the input again for next loop
cin>>ch;
}

return 0;
}

-----------------------------------------------------------------------------------------------------------------------------------

output


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