slips 18

/* Slip no : 18_1 Write a C++ program to create a class Integer. Write necessary member functions to overload the operator unary pre and post increment ‘++’ for an integer number. */

#include<stdio.h>

#include<conio.h>

#include<iostream.h>

class integer

{

                int no;

                public:

                integer(){}

                integer(int num)

                {

                                no=num;

                }

                integer operator++()

                {

                                ++no;

                                return *this;

                }

                integer operator++(int) //post increment

                {

                                integer temp=*this;

                                no++;

                                return temp;

                }

                void display()

                {

                                cout<<"\nNo = "<<no;

                }

};

void main()

{

                integer i(10),i1(10),i3;

                clrscr();

                cout<<"\nAfter post increment = ";

                i3=i++;

                i3.display();

                cout<<"\nAfter pre increment = ";

                i3=++i1;

                i3.display();

                getch();

}

/* Slip no : 18_2 Write a C++ program to read the contents of a text file. Count and display number of characters, words and lines from a file. Find the number of occurrences of a given word  present in a file. */

#include <iostream.h>

#include<fstream.h>

#include<stdlib.h>

#include<string.h>

main()

{

                char character,file[20],word[20];

                ifstream in;

                int charcnt,wcnt,lcnt; //clrscr();

                cout<<"\n Enter file name : ";

                cin>>file;

                in.open(file);

                if(in.fail())

                {

                                cout<<"\n file does not exists :"<<endl;

                                exit(1);

                }

                charcnt = 0;

                lcnt = 0;

                wcnt = 0;

               

                char ch;

                while(!in.eof())

                {

                                ch=in.get();

                                if(ch == '\n')

                                {

                                                lcnt++;  wcnt++;

                                }

                                else if(ch==' ' ||ch=='\t' )

                                {wcnt++; charcnt++;

                                }

                                else charcnt++;

                    }

                    cout << "Characters: " << charcnt << endl;

                    cout << "Lines: " << lcnt << endl;

                    cout << "Words: " << wcnt << endl;

                                in.close();

                               

                    cout<<"\n Enter word yo be search : ";

                                cin>>word;

               

                                in.open(file);

                               

                                char str[20];int f=0;

                                while(!in.eof())

                                {

                                                in>>str;

                                                if(strcmp(str,word)==0)

                                                {

                                                                f++;

                                                }

                                }

                                if(f!=0)

                                {cout<<"\n word found : "<<f;}

                                else cout<<"\n NOT found";             

                                getch();

                }