Question

Starting Out with c++ Student Line Up Using Files A teacher has asked all her students to line up according to their first name. For example, in one class Amy will be at the front of the line, and Yolanda will be at the end. Write a program that will prompt the user for a filename that contains the student names. Names should be read in until there is no more data to read. As the names are read in, you will check to see if the new name should be in the first or last student. Do not use arrays or sorting for this problem!

Answer 1

//Program to read student names from a file and output the first and last student names when arranged alphabetically.

#include<iostream>
#include<fstream>
using namespace std;

int main()
{

//Intialize variables
string studentName;
string first="";
string last="";
ifstream inputFile;
string filename;
  

//Get file name from user
cout << "Please enter the name of the file with the list of students\n";
cin >> filename;

//Open the file
inputFile.open(filename);
if (!inputFile)
{
   cout << "Error opening the file.\nPlease restart the program and try again.";
   return 1;
}
while (inputFile >> studentName){
    if(first=="" && last=="")
    {
        first=studentName;
        last=studentName;
    }
if(studentName<first)
first=studentName;
  
if(studentName>last)
last=studentName;
  
}
cout << first << " is the first student in line.\n";
cout << last << " is the last student in line.\n";
   
inputFile.close();
return 0;
}

Output

//name.txt

//code screenshots