Question

Write a C++ Program

Write a program that prompts the user to input a string. The program then uses the function substr to remove all the vowels from the string. For example, if str=”There”, then after removing all the vowels, str=”Thr”. After removing all the vowels, output the string. Your program must contain a function to remove all the vowels and a function to determine whether a character is a vowel.

You must insert the following comments at the beginning of your program and write our commands in the middle:

Write a C++ Program:

/*

// Name: Your Name

// ID: Your ID

*/

#include <iostream>

#include <string>

using namespace std;

void removeVowels(string& str);

bool isVowel(char ch);

int main()

{

    string str;

    cout << "Enter a string: ";

    …

    …

         YOUR CODE HERE

    …

    …

return 0;

}

void removeVowels(string& str)

{

    int len = str.length();

    …

    …

         YOUR CODE HERE

    …

    …

}

bool isVowel(char ch)

{

    switch (ch)

    …

    …

         YOUR CODE HERE

    …

    …

}

Answer 1

Code:

#include <iostream>

#include <string>

using namespace std;

void removeVowels(string& str);

bool isVowel(char ch);

int main()

{
    string str;
    cout << "Enter a string: ";
    getline(cin,str);
    removeVowels(str);
    cout<<"string without vowels is "<<str;
   return 0;
}

void removeVowels(string &str)

{
    int len = str.length();
    int i=0;
    while(i<len){
       if(isVowel(str[i])){
               str=str.substr(0,i)+str.substr(i+1,len-i+1);  
           len=str.length();
       }
       else{
           i=i+1;
       }
   }
}

bool isVowel(char ch)

{

    switch (ch){
       case 'a':
       case 'A':
           return 1;
           break;
       case 'e':
       case 'E':
           return 1;
           break;
       case 'i':
       case 'I':
           return 1;
           break;
       case 'o':
       case 'O':
           return 1;
           break;
       case 'u':
       case 'U':
           return 1;
           break;
       default :
           return 0;
    }

}

Output: