Question

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.

#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

#include <iostream>

#include <string>

using namespace std;

void removeVowels(string& str);

bool isVowel(char ch);

int main()

{

string str;

cout << "Enter a string: ";
cin>>str;
//if you want this to work for phrases also
//uncomment the below line.
//getline(cin,str);
removeVowels(str);
cout<<str;
return 0;

}

void removeVowels(string& str)

{

int len = str.length();
string st="";
for(int i=0;i<len;i++)
{
if(!isVowel(str[i]))
{
st=st+str[i];
}
}
str=st;
}

bool isVowel(char ch)

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

}

input Enter a string: There Thr ... Program finished with exit code 0 Press ENTER to exit console. I,