Question

c++ language

Write a program that contains the following functions,
i. A function isVowel that takes in a character and returns true if it is a vowel and false otherwise
ii. A function that request from the user to enter in a sequence of characters, and outputs the number of vowels entered. (Use Function in a) to assist you, a sentinel value can be used to specify the end of the user input
iii. A function that reads 3 test scores from 5 different students stored in a file and returns the highest average test score

Answer 1

solution:

#include <iostream>

#include<bits/stdc++.h>

using namespace std;

//A function isVowel that takes in a character and returns true if it is a vowel and false otherwise

bool isVowel(char x)

{

if (x == 'a' || x == 'e' || x == 'i' || x == 'o' || x == 'u' || x == 'A' || x == 'E' || x == 'I' || x == 'O' || x == 'U')

return true;

else

return false;

}

//A function that request from the user to enter in a sequence of characters, and outputs the number of vowels entered.

int countVowels()

{

char ch;

int count = 0;

while(1)

{

cout<<"Enter a character (Press n or N to quit): ";

cin>>ch;

if(ch=='n' || ch == 'N')

{

break;

}

else

{

if (isVowel(ch)) // Check for vowel

++count;

}

}

return count;

}

//A function that reads 3 test scores from 5 different students stored in a file and returns the highest average test score

void getStudentsList(string file[],int n)

{

// Variables to store average score of a student

// and maximum average score

int avgScore;

int maxAvgScore = INT_MIN;

// List to store names of students

// having maximum average score

vector<string> names;

// Traversing the file data

for (int i = 0; i < n; i += 4) {

// finding average score of a student

avgScore = (stoi(file[i + 1]) +

stoi(file[i + 2]) +

stoi(file[i + 3])) / 3;

if (avgScore > maxAvgScore) {

maxAvgScore = avgScore;

// Clear the list and add name of student

// having current maximum average score in the list

names.clear();

names.push_back(file[i]);

}

else if (avgScore == maxAvgScore)

names.push_back(file[i]);

}

// Printing the maximum average score and names

// of students having this maximum average score

// as per the order in the file.

for (int i = 0; i < names.size(); i++) {

cout <<names[i] + " ";

}

cout << maxAvgScore;

}

int main()

{

cout<<"\nResult of first function:\n ";

char c;

cout<<"Enter a character: ";

cin>>c;

if( isVowel(c)==true)

cout<<"Entered character is vowel.";

else

cout<<"Entered character is consonent.";

cout<<"\n\nResult of second function:\n ";

int count = countVowels();

cout<<"The number of vowels entered: "<<count;

cout<<"\n\nResult of third function:\n ";

string file[] = { "Shrikanth", "20", "30",

"10", "Ram", "100", "50", "10","Mohan", "40", "50", "100","Charlie", "200", "20", "10","Tom", "10", "50", "50" };

// Number of elements in string array

int n= sizeof(file)/sizeof(file[0]);

getStudentsList(file,n);

return 0;

}

Output:

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