Question

1. Write a C++ program that will count the number of words and vowels in a sentence.

1. Create a bool function called isVowel that accepts a character as a parameter and returns a true if it’s a vowel (aeiou) and false otherwise.
2. Create an int function named countVowels that will accept a string variable as a parameter and will return the number of vowels in it. Call the isVowel function as part of this process.
3. Write an int function named countWords that will accept a string variable as a parameter and will return the number of words in it. (Assume that there is only one space between each pair of words, and that the only spaces are between words.)
4. In your main function:
   1. read a single string from the text file (Lab19B.txt) using the getline command because the string should include spaces.
   2. call the countVowels function with that string and print the returned value with a label
   3. call the countWords function with that string and print the returned value with a label

Answer 1

Please let me know if anything is required.

Copyable code:

#include <fstream>
#include <iostream>
#include <string.h>
using namespace std;

//checking if it is vowel
bool isVowel(char c)
{
if(c=='a' || c=='e' ||c=='i' ||c=='o' || c=='u')
{return true;}
else
{return false;}
  
}
//function to count the number of vowels
int countVowels(string s)
{
int vowelsCount=0;
for (int i=0;i<s.length();i++)
{
if(isVowel(s[i]))
{
vowelsCount++;
}
}
return vowelsCount;
}

//counting the words
int countWords(string s)
{
int wordsCount=0;
if(s.length()>0)
{
//splitting the string with delimiter space
string delimiter = " ";
size_t position = 0;
string word;
while ((position = s.find(delimiter)) != std::string::npos)
{
word = s.substr(0, position);
wordsCount++;
s.erase(0, position + delimiter.length());
  
}
  
wordsCount++;
}
  
return wordsCount;
  
}

int main()
{
// taking the input file name input from the user
cout<<"Please enter the input file name: ";
string infile;
cin>>infile;
  
string line;
ifstream myfile1 (infile);
if (myfile1.is_open())
{
//reading single string from a file
getline(myfile1,line);
  
{
}
}
  
//printing the number of words in the string
int wc=countWords(line);
cout<<"Number of words in "<<line<<" are: "<<wc<<"\n";
  
int vc=countVowels(line);
cout<<"Number of vowels in "<<line<<" are: "<<vc<<"\n";

return 0;
}

Sample input:

Copyable sample input:

Rayyan is counting words and vowels

Sample output: