Question

Question 2 (10 points): Write a C++ program called question2.cpp. Let the user input a sentence (a string). You are then to count the number of vowel letters that appeared in that sentence: aeiou.

Answer 1

#include <iostream>

using namespace std;

int main()
{
//string variable declaration
string sentence;
  
//integer variable declaration and initializaion
int countVowel = 0;
  
//get user input
cout<<"Enter a sentence(a string): ";
getline(cin, sentence);
  
//count the vowels
for(int i=0; i<sentence.length(); i++)
{
char c = tolower(sentence[i]);
if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u')
{
countVowel++;
}
}
  
//display the result
cout<<endl<<"The number of vowels is: "<<countVowel;
  
return 0;
}

OUTPUT:

Enter a sentence(a string): This is a cow.

The number of vowels is: 4