Question

Do WITHOUT #include<sstream>

C++

You are to write a program that will read in upto 15 names, rearrange each person's name. The list has been collected from different places and the names are not in some standard format. A person's last name may appear last or it may appeaer first. A label has been associated with each name to identify where the last name appears. Either "surname" or "lastname" appears just before a person's last name. The other will be the first name followed by optionally middle initial or name. Capitalize the first letters. Examples of inputs are given below.

Read in the names, and arrange them with the last name first, followed by a comma, followed by the first name and his middle name or initial if it exist. Sort the list of names and print out the results.

input file: namesLast.txt

Example input:

     tom archer lastname jones

    lastname luewey Huewey dewy

    See More surname Or-less

Example Output(Sorted):

        Jones, Tom Archer

        Luewey, Huewey Dewy

       Or-less, See More

Please be original. Don't copy/paste from another response. I need explanation as to why things are assigned and what they do. If you want my upvote you need to earn it. Teach someone something new! I dislike having to use more than one question for the same question

Answer 1

//Note-While writing input to the names.txt if you copy them from somewhere else
//You might not get accurate results because the font-style and few other things may unknowingly get copied and you might get some extra characters
//So to check you should better type the names on your own and verify... :) :) Happy Coding
#include<iostream>
/*For file handling, you can be specific too.
For reading from a file use ifstream and for writing to a file use ofstream*/
#include<fstream>
/*For string datatype in this program*/
#include<string>
using namespace std;

int main()
{
//The variable for the file in the program
fstream read_file;
//Using the open function to open a file
//Remember that the file should be in the same location or the folder where your code exists
//Or else you have to give the full path of the file
//And dont forget to include the extension of the file type
read_file.open("names.txt",ios::in);
//Since the highest limit mentioned in the question is 15 I have taken 15 variables
string names[15];
//The variable for iterating through the names and keeping a count of them
int count_names=0;
//This if condition is used to check if the file has been properly loaded or not
if(!read_file)
{
cout<<"Unable to open the file"<<endl;
}
//The normal program gets executed if the file is loaded
else
{
//This while loop runs until the end of the file
while(!read_file.eof())
{
//Since every single name is on one line and contains four words we need to read four words
//from each line,so I have declared four string variables and read them
string s1,s2,s3,s4;
read_file>>s1>>s2>>s3>>s4;
//Since the program asks us to convert the first letter of all the words to uppercase
//I have subtracted ASCII value of 32 from the first letter of the word so that we get capital letter
s1[0]=s1[0]-32;
s2[0]=s2[0]-32;
s3[0]=s3[0]-32;
s4[0]=s4[0]-32;
//The below lines have the main logic of the program
//If we analyse the names in the files then there are only two possibilities
//The word surname or lastname can appear either as the first word or the third word
//Surname/LastName last_name first_name middle_name : 1st Case
//first_name middle_name Surname/LastName last_name: 2st Case
//So using this idea I have appended the names accordingly and created the full name for the person
if(s1=="Lastname"||s1=="Surname")
{
names[count_names]=s2 + ", " +s3+" "+s4;
}
else if(s3=="Lastname"||s3=="Surname")
{
names[count_names]=s4+", "+s1 +" "+s2;
}
//This variable keeps the count of the names so far
count_names++;
}
//The for loop below is used to sort the names in their alphabetical orders using a basic selection sort
for(int i=0;i<count_names;++i)
{
for(int j=i+1;j<count_names;++j)
{
string temp;
if(names[i]>names[j])
{
//This is an inbuilt function that takes two values and then swaps them
//If this doesn't work for in your compiler,then use a temporary variable and then swap them
swap(names[i],names[j]);
}
}
}
//This loop finally prints all the names to the console out
for(int i=0;i<count_names;++i)
{
cout<<names[i]<<endl;
}
}
//Finally we close the file that we opened
read_file.close();
return 0;
}

Input File......Output.....

How both the files should exist in same folder...The Program in the programming window...

Hope it helps you ...

And I hope I have cleared all your doubts