C++

Forum

 
whlie statement problem

gyneisler (11)
On lines 47-53 the code is suppose to display "You have entry a negative, please try again" , however, when a correct positive number is enter I still get the display. 





1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
 
#include<iostream>
#include<cctype>
using namespace std;

int main()
{
   
 char carType;
 int A, B, C;
 char keepgoing;
 char condition; 
 double miles, per_miles,upgrade;
 double days, per_days,new_char;
 double price, fees, charges,discount, new_charges;


   
 do
 {
   
  do
  { 
    cout<<"Which car are you shopping for? (enter A, B, C)?"<<endl;
    cin>>carType;
      
    }while (carType != 'A' && carType != 'B' && carType != 'C' );
      
      

    cout<<"What condition? (S, O, or, P)"<<endl;
    cin>>condition;
     
    if ((condition !='S') || (condition !='O') || (condition !='P'));
     
    
    else
      cout<<"Please enter the correct response"<<endl;
    
    
    
    cout<<"How many miles?"<<endl;
    cin>>miles;
    
 do 
  {
   
  cout<<"How many days?"<<endl;
  cin>>days;
  
  cout<<"You enter a negative number,please try again."<<endl;
  
  
 }while (days < 0);
    
         cout.setf(ios::fixed);
         cout.setf(ios::showpoint);
         cout.precision(2);

      
      
         switch(carType)
      {
       
         case 'A':
         
         per_miles = miles * 0.10;
         per_days = days * 29.95;
         price = per_miles + per_days;
         
                  
         break;
         
         case 'B':
         
         per_miles = miles * 0.15;
         per_days = days * 35.95;
         price = per_miles + per_days;
         
         
              
         break;
         
         case 'C':
         
          per_miles = miles * 0.20;
         per_days = days * 39.95;
         price = per_miles + per_days;
         
                           
               
         break;
         
         default:
         cout<<"You entered an incorrect car choice"<<endl;
         }
         
         if(condition =='O')
         {
            fees = price * 0.10;
            price = price - fees;
         
         cout<<"The charges are?"<<price<<endl;
         
         
         
         }
         else if (condition == 'P')
         {
            fees = price * 0.10;
            price = price + fees;
                      
         cout<<"The charges are?"<<price<<endl;
         
        
         
         
         }
         else
         {
         cout<<"The charges are?"<<price<<endl;
         }
         
                    
               if (condition =='S')
               {
               fees = price * 0.10;
               new_charges = price + fees;
               discount = new_charges * 0.05;
               upgrade = new_charges - discount;
               
               cout<<"You may upgrade for a total cost of $"<<upgrade<<endl;
              }            
             else if(condition =='O')
             {
               discount = price * 0.05;
               upgrade = price - discount;
               
               cout<<"You may upgrade for a total cost of $"<<upgrade<<endl;
            }
            else
            {          
           cout<<"There are upgrades avialble"<<endl;
           
           }
         
               
         cout<<"Do you want another one (y/n)?"<< endl;
         cin>>keepgoing;
         
         }while (keepgoing == 'Y' || keepgoing == 'y');
         
         cout<<"Thank you for using this program. Goodbye."<<endl;
         }
bingo1 (31)
When the user enters in a number for days , you didn't check if it was positive or negative. You cout the statement right after it, so the user could enter in just about anything, and the cout statement will execute.

You have to check if their input was negative, then display the message.

IWishIKnew (1364)
Would be easier to read if the code was formatted...

Also, you need to add the if statement, lol. It;s just couts it, and doesn't actually reflect the values you entered.

Also, your while loop will only execute if the days variable is negative.
Last edited on
Topic archived. No new replies allowed.