Question

Write a C++ program to read line of string as an input and do the following operation.Do proper input validation to your input. I) Capitalize first and last character of a each word in a given string. ,Ii) Delete a word from a given string. Pop-up a message if the string is empty. III) Add a word in middle of a given string.Capitalize the new word if it already exist.

Answer 1

#include <iostream>

#include<bits/stdc++.h>

using namespace std;

// Capitalize first and last character of a each word in a given string

string FirstAndLast(string str)

{




  // Create an equivalent string

  // of the given string

  string ch = str;

  for (int i = 0; i < ch.length(); i++)

  {




    // k stores index of first character

    // and i is going to store index of last

    // character.

    int k = i;

    while (i < ch.length() && ch[i] != ' ')

      i++;




    // Check if the character is a small letter

    // If yes, then Capitalise

    ch[k] = (char)(ch[k] >= 'a' && ch[k] <= 'z'

            ? ((int)ch[k] - 32)

            : (int)ch[k]);

    ch[i - 1] = (char)(ch[i - 1] >= 'a' && ch[i - 1] <= 'z'

              ? ((int)ch[i - 1] - 32)

              : (int)ch[i - 1]);

  }




  return ch;

}

//Add a word in middle of a given string

void insertDemo(string str, string str1)

{




  // Inserts str1 in str starting

  // from 6th index of str

  str.insert(12,str1, 0,11);

  cout << "After addition of word : ";

  cout << str;

}




int main()

{

  char str[200], str1[57], wrd[20];

  int i, j, strLen, wrdLen, tmp, chk=0;

  cout<<"Enter the String: ";

  gets(str);

  cout<<"Enter the Word to delete: ";

  cin>>wrd;

  cout << "Enter new word to be added in the middle : ";

  cin>>str1;

  cout << "You entered: " << str << endl;

  cout <<"\n\nCapitalize first and last character :"<< FirstAndLast(str)<<endl;

  cout << "Original String : " << str << endl;

  insertDemo(str, str1);

  //Delete a word from a given string. Pop-up a message if the string is empty

  strLen = strlen(str);

  wrdLen = strlen(wrd);

  for(i=0; i<strLen; i++)

  {

    tmp = i;

    for(j=0; j<wrdLen; j++)

    {

      if(str[i]==wrd[j])

        i++;

    }

    chk = i-tmp;

    if(chk==wrdLen)

    {

      i = tmp;

      for(j=i; j<(strLen-wrdLen); j++)

        str[j] = str[j+wrdLen];

      strLen = strLen-wrdLen;

      str[j]='\0';

    }

  }

  cout<<"\nNew String after deletion = "<<str<<endl;

  return 0;

}