C++ check a type char variable against letters of the alphabet

[Townsend]

I am getting an error I cannot seem to figure out. whenever I try to compile it, it says c is undeclared. I want to check a type char variable against letters of the alphabet in an if function. Maybe someone could explain what I am doing wrong.

#include <iostream>
#include <cctype>


//Prototype Declaration
void caseOne (char& vehicle);

//Prototype Declaration
void caseTwo (char& vehicle);

using namespace std;

int main()
{
    char vehicle;                                               //vehicle type
    int hourEnter=0;                                            //Hour entered lot
    int minuteEnter=0;                                          //minute entered lot
    int hourLeft=0;                                             //Hour left lot
    int minuteLeft=0;                                           //minute left lot
    int r=0;                                                    //dummy variable
    
    cout<<endl<<endl<<endl
    <<"Please enter the type of "
    <<"vehicle you drive. "      
    <<endl<<endl                                                                                     
    <<"Please enter C for car, "
    <<"B for bus and T for truck."
    <<endl<<endl;     
    
    cin>>vehicle;                                             
    
    int islower(vehicle);
     
    if (islower=1)
    {   
        r=1;
    }
    else
        r=2;
        
    switch (r)
           {
                  case 1: caseOne (vehicle);
                          break;
                  
                  case 2: caseTwo (vehicle);
                          break;
                          
                  default: cout<<endl<<endl
                              <<"Input error please start over.";
                          break; 
           }
        
    cout<<endl<<endl
    <<"Please enter the hour, between 0 and 23,"
    <<" that you entered the lot."
    <<endl<<endl;  
    
    cin>>hourEnter;                                           //Prompt user for hour                                                                         
    
    cout<<endl<<endl
    <<"Please enter the minute, between 0 and 59, "
    <<"that you entered the lot."
    <<endl<<endl;
    
    cin>>minuteEnter;
        
    cout<<endl<<endl
    <<"Please enter the hour, between 0 "
    <<"and 23, that you left the lot."
    <<endl<<endl;
    
    cin>>hourLeft;
    
    cout<<endl<<endl
    <<"Please the minute, between 0 and 59, "
    <<"that you left the lot."
    <<endl<<endl;
    
    cin>>minuteLeft;
    
    cout<<endl<<endl                                        //program output
    <<"\tPARKING LOT CHARGE"
    <<endl<<endl
    <<"Type of vehicle:          "
    <<vehicle
    <<"\t\tTIME-IN "
    <<endl
    <<"                                              "
    <<"\t\t       "
    <<hourEnter<<minuteEnter
    <<endl<<endl<<endl;
    
 
    return 0;
}  //main




/*================================caseOne=======================================
     Determines type of vehicle from user input
     Pre veh contains vehicle type to be determined
     post nothing
*/

void caseOne (char& vehicle)
{
     char x=c;
     char y=b;
     char z=t;
     if (vehicle==x)
     {
                vehicle=Car;
     }
     else if (vehicle==y);
     {
          vehicle=Bus;
     }
     else if (vehicle==z)
     {
          vehicle=Truck;
     }
     
     return;
}


/*================================caseTwo=======================================
     Determines type of vehicle from user input
     Pre veh contains vehicle type to be determined
     post nothing
*/
void caseTwo (char$ vehicle)
{
     if (vehicle==C)
     {
              vehicle=Car;
     }
     else if (vehicle==B)
     {
          vehicle=Bus;
     }
     else if (vehicle==T)
     {   
         vehicle=Truck;
     }
           return;
}

Of course the program is not finished yet but I need to fix this problem before I go any futher.

Thanks in advance

Townsend

 

[Nylex]

Don't you need to put characters within single quotes in C++?

Like this: char x = 'c';

Otherwise, the compiler will think c is another variable.

 

[JFo]

letters of the alphabet have to be in single quotes

ie: char x = 'c';

edit: oops, sorry nylex, didn't see you posted it already