Question

(Count vowels and consonants, file input, nested-loops, switch statement) Assume that letters A, E, I, O and U are the vowels. Write a program that reads strings from a text file, one line at a time, using a while-loop. You do the following operations within each loop:  Read one line from the input file and store it in a string;  Count the number of vowels and consonants (using either while-loop or for-loop) in the file string. The while-loop will terminate when the end-of-file is reached. After the loop is finished, the program displays the total number of vowels and consonants in the text file.

[A text file, is provided for testing input file.- It is basically a long 3 page questions attached as input file]

Answer 1

//////////////////////// c++ program

#include<iostream>
#include<fstream>
#include<string>

using namespace std;

int main(){
  
   // number of vowels
   // number of consonanats
  
   int vcount=0,ccount=0;
  
   ifstream file;
  
   cout<<"Enter file name : ";
   string st;
  
   cin>>st;
  
   //open file
  
   file.open(st.c_str());
  
   // if file not found
  
   if(!file.is_open()){
       cout<<"\n\nFile not found.";
   }
   else{
       string line;
      
       // read each line
      
       while(getline(file,line)){
          
           // get size of string
          
           int len=line.length();
          
           for(int i=0;i<len;i++){
              
               // read each character
               char ch=line.at(i);
              
              
               // check it is letter or not
              
               if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z')){
              
              
                   // identify vowels
                   if(ch=='a' || ch=='A' || ch=='e' || ch=='E' || ch=='I' || ch=='i' || ch=='o' || ch=='O' || ch=='u' || ch=='U'){
                       vcount++;
                   }
                  
                   // identify consonanats
                   else{
                       ccount++;
                   }
               }
           }
       }
      
       // output
      
       cout<<"Number of vowels are : "<<vcount;
       cout<<"\nNumber of consonants are : "<<ccount;
          
   }
system("pause");
   return(0);
  
}

////////////////////// java program

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;

public class JavaApplication47 {

public static void main(String[] args) {
System.out.print("Enter file name : ");
  
Scanner sc=new Scanner(System.in);
  
// get file name
String fileName=sc.next();
  
// number of vowels
// number of consonants
  
int vcount=0,ccount=0;
  
try {
BufferedReader br=new BufferedReader(new FileReader(new File(fileName)));
  
String line;
  
// read each line by line
while((line= br.readLine())!=null){
  
for(int i=0;i<line.length();i++){
  
char ch=line.charAt(i);
// check it is letter or not
  
if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z')){
  
  
// identify vowels
if(ch=='a' || ch=='A' || ch=='e' || ch=='E' || ch=='I' || ch=='i' || ch=='o' || ch=='O' || ch=='u' || ch=='U'){
vcount++;
}
  
// identify consonanats
else{
ccount++;
}
}

}
}
  
// buffer close
  
br.close();
  
System.out.print("\nNumber of vowels are : "+vcount);
System.out.println("\nNumber of consonants are : "+ccount);
  
} catch (FileNotFoundException ex) {
System.out.println("File not found.");
}
catch (IOException ex) {   
System.out.println("Error in reading");
}
  
sc.close();
  
}
  
}