Question

C++ program. Design a class and function that does a basic word search and all the possible functions. In a class, there can be lookup, replace, count word, count character function, and more.

Answer 1

#include<iostream>

#include<string>

#include<stdio.h>

#include <bits/stdc++.h>

#include <boost/algorithm/string/replace.hpp>

using namespace std;

class sentence{

public:

//Function will replace the value with the value you entered

void replace(string word){

string name;

cout<<"Enter a String"<<endl;

getline(cin,name);

string rep;

cout<<"Enter the Replacer "<<endl;

cin>>rep;

//built in function of string to replace

boost::replace_all(name, word, rep);

cout<<name<<endl;

}

//function to count the characters in a string

void character_Count(string se){

cout<<se.size();

}

//function will count words in a sentence

void wordcount(){

char arr[50]; // putting the string into character array

int count = 0, i;

cout << "Enter a string : ";

gets(arr); //gets function use to get the value from a character array

cin.get();

//loop will run till array index not equal to NULL space

for (i = 0; arr[i] != '\0';i++)

{

if (arr[i] == ' ')

count++;

}

cout << "Number of words " << count + 1;

}

//Function will find the word from the string you will enter

void lookup(){

int i=0,j=0;

string sentence ;

string key ;

cout<<"Enter a sentence "<<endl;

getline(cin,sentence);

cin.ignore();

cout<<"Enter the word to find "<<endl;

getline(cin,key);

while(sentence[i]!='\0')

{

if(sentence[i]==key[j] && key[j]!='\0'&& sentence[i]!=' ')

j++;

else

j=0;

i++;

}

if(sentence==strlen(key))

cout<<"Word found"<<endl;

else

cout<<"Word not found"<<endl;

}

};

int main (){

sentence obj;

int choice;

string nameee;

cout<<"Press 1 check string lookup function"<<endl;

cout<<"Press 2 for replace function"<<endl;

cout<<"Press 3 for count word"<<endl;

cout<<"Press 4 for count character"<<endl;

cin>>choice;

if(choice==1){

obj.lookup();

}

else if(choice==2){

string key;

cout<<"Enter the the word to be replaced "<<endl;

getline(cin,key);

obj.replace(key);

}

else if (choice==3){

obj.wordcount();

}else if(choice==4){

cout<<"Enter a sentence"<<endl;

getline(cin,nameee);

obj.character_Count(nameee);

}

return 0;

}