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  1. //@Author Damien Bell
  2. #include <iostream>
  3. #include <cmath>
  4. using namespace std;
  5. void displayMenu();
  6. void doCalcs(int, double, double);
  7.  
  8. int main(){
  9.     int choice=0;
  10.     double x=0, y=0, product=0;
  11.     char quit =' ';
  12.     while (quit != 'y'){
  13.         displayMenu();
  14.         cin >> choice; 
  15.  
  16.         cout <<"\nEnter a value for the first number: ";
  17.         cin >> x;
  18.  
  19.         cout <<"\nEnter a value for the second number: ";
  20.         cin >> y;       
  21.  
  22.         doCalcs(choice, x, y);
  23.  
  24.  
  25.  
  26.         cout <<"\nDo you want to quit? y/n ";
  27.         cin >>quit;
  28.     }
  29.  return 0;
  30. }
  31.  
  32. void displayMenu(){
  33.    cout << "Press 1 to add" <<endl << "Press 2 to subtract" <<endl <<"Press 3 to multiply"<<endl;
  34.    cout << "Press 4 to divide" <<endl << "Press 5 to raise a number to a power" <<endl <<"Press 6 to mod a number"<<endl;
  35.    cout << "Please enter your choice: ";
  36. }//End function displayMenu
  37.  
  38. void doCalcs(int menuChoice, double a, double b){
  39.     switch(menuChoice){
  40.         case 1:{
  41.             cout << a << " + " << b << " = " <<a+b;
  42.         }
  43.         case 2:{
  44.             cout << a << " - " << b << " = " <<a-b;
  45.             break;
  46.         }        
  47.         case 3:{
  48.             cout << a << " * " << b << " = " <<a*b;
  49.             break;
  50.         }        
  51.         case 4:{
  52.             cout << a << " / " << b << " = " <<a/b;
  53.             break;
  54.         }        
  55.         case 5:{
  56.             cout << a << " ^ " << b << " = " << pow(a, b);
  57.             break;
  58.         }        
  59.         case 6:{
  60.             cout << a << " % " << b << " = " << fmodf(a,b);
  61.             break;
  62.         }        
  63.         default:{
  64.             cout << "Something broke";
  65.         }
  66.  
  67.  
  68.  
  69.  
  70.  
  71.  
  72.     }//end switch
  73.  
  74.  
  75. }//end function doCalc
  76.  
  77.  
  78.  
stdin
copy 
5
2
4
y
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:10: warning: unused variable ‘product’
stdout
copy 
Press 1 to add
Press 2 to subtract
Press 3 to multiply
Press 4 to divide
Press 5 to raise a number to a power
Press 6 to mod a number
Please enter your choice: 
Enter a value for the first number: 
Enter a value for the second number: 2 ^ 4 = 16
Do you want to quit? y/n
https://ideone.com/xl2Zp
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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