slips 12

/* Slip no : 12_1 Write a C++ program to accept length and width of a rectangle. Calculate and display perimeter as well as area of a rectangle by using Inline function. */

#include<iostream.h>

#include<conio.h>

class rectangle

{

                float l,w;

                public:

                void getdata()

                {

                                cout<<"\nEnter length of rectangle : ";

                                cin>>l;

                                cout<<"\nEnter width of rectangle : ";

                                cin>>w;

                }

                inline void Peri()

                {

                                cout<<"\nPerimeter of rectangle = "<<2*(l+w);

                }

                inline void Area()

                {

                                cout<<"\nArea of rectangle = "<<l*w;

                }

};

void main()

{

                clrscr();

                rectangle obj;

                obj.getdata();

                obj.Peri();

                obj.Area();

                getch();

}

/* Slip no : 12_2 Create a class MyString which contains a character pointer (using new operator). Write a

C++ program to overload following operators:

>               to compare length of two strings

!=              to check equality of two strings

+               to concatenate two strings */

#include<conio.h>

#include<iostream.h>

#include<string.h>

class Mystring

{

char *str;

int len;

public:

Mystring()

{}

Mystring(char s[])

{

len=strlen(s);

str=new char[len+1];

strcpy(str,s);

}

void display()

{

cout<<endl<<"string : "<<str;

}

void operator>(Mystring ob)

{

int len1,len2;

len1=strlen(str);

len2=strlen(ob.str);

if(len1>len2)

cout<<endl<<str<<" is max length ";

else

cout<<endl<<ob.str<<" is max length ";

}

void operator!=(Mystring ob)

{

if(strcmp(str,ob.str)==0)

cout<<endl<<"strings are same";

else

cout<<endl<<"strings are not same";

}

Mystring operator+(Mystring ob)

{

Mystring a;

int len1,len2;

len1=strlen(str);

len2=strlen(ob.str);

a.str=new char[len1+len2+1];

strcpy(a.str,str);

strcat(a.str,ob.str);

return a;

}

};

void main()

{

char s1[10],s2[20];

clrscr();

cout<<"\n Enter string : ";

cin>>s1;

cout<<"\n Enter 2nd string : ";

cin>>s2;

Mystring m1(s1),m2(s2),m3;

m1.display();

m2.display();

m1>m2;

m1!=m2;

m3=m1+m2;

m3.display();

getch();

}