get and set char *

That's part of my HW as an introduction to "set and get" to classes.

We had to write a code which will create a class with different properties data types as INT,DOUBLE,BOOL,CHAR and CHAR array.

I am having trouble with the char array.

Any advice or reference will be much appreciated!


class datatype
{
    int x=0;
    double d=0;
    char c;
    char* t=new char[256];
    char* t1=new char[256];
    bool y;
    
public:
	
 void setXmanual(){ cout<<"Enter INT value "; cin>>x; }
 void setX(int value){ x=value; }
const int getX()const{ return x; }

 void setDmanual(){ cout<<"Enter DOUBLE value "; cin>>d; }
 void setD(double value){ d=value; }
const double getD()const{ return d; }

 void setCmanual(){ cout<<"Enter CHAR value "; cin>>c; }
 void setC(char value){ c=value; }
const char getC()const{ return c; }

 void setYmanual(){ cout<<"Enter BOOL value "; cin>>y; }
 void setY(bool value){ y=value; }
const bool getY()const{ return y; }

 void setTmanual(){ cout<<"Enter CHAR array value "; cin>>t1; strcpy(t, t1) ;}
void setT(char *value){ strcpy(t, value); }
const char getT()const{ return t; } //error



}; 


int main()
{
 srand(time(0));
 
   datatype x;
   
   x.setXmanual();
   cout<<"setXmanual  INT x="<<x.getX()<<endl;
   x.setX(777);
   cout<<"setXautomat INT x="<<x.getX()<<endl;
   cout<<endl;
   
   x.setDmanual();
   cout<<"setDmanual DOUBLE d="<<x.getD()<<endl;
   x.setD(7.777);
   cout<<"setXautomat DOUBLE x="<<x.getD()<<endl;
   cout<<endl;
   
   x.setCmanual();
   cout<<"setDmanual CHAR c="<<x.getC()<<endl;
   x.setC('a');
   cout<<"setXautomat CHAR c="<<x.getC()<<endl;
   cout<<endl;
   
   x.setCmanual();
   cout<<"setYmanual BOOL y="<<x.getC()<<endl;
   x.setC('a');
   cout<<"setXautomat BOOL y="<<x.getC()<<endl;
   cout<<endl;
   
   x.setTmanual();
   cout<<"setYmanual CHAR array T="<<x.getT()<<endl;
   x.setT("You are awesome");
   cout<<"setXautomat CHAR array T="<<x.getT()<<endl;
   
return 0;
}

salem c (3700)

> const char getT()const{ return t; } //error
Make it a const char *
const char *getT()const{ return t; }

> cin>>t1; strcpy(t, t1)
You may as well just do
cin>>t;
and be done with t1

Oh, and use std::string instead of all this manual memory allocation and unsafe C-style str... functions.

MaxGreen (115)

salem, many thanks!

please take a look at
void setTmanual(){ cout<<"Enter CHAR array value "; cin>>t1; strcpy(t, t1) ;}

it can't display a normal sentence, simply just the first word of it.( until the first space)

what am I doing wrong?

seeplus (6599)

stream extraction (>>) only extracts to a white-space char (space, tab or newline). To obtain the whole line, use .getline() eg

cin.getline(t1, 256);

Note there is an issue mixing >> and getline(). >> doesn't consume the terminating white-space char, while getline() returns when a terminating white-space is found. If you mix >> and getline() then after a >> is used and before the .getline() use cin.ignore(1000, '\n') which will remove up to 1000 chars before the newline and remove the newline.

MaxGreen (115)

seeplus thanks for in depth explanation

Topic archived. No new replies allowed.

C++

Forum

get and set char *