Now my requirement is to sort 10 names from their with respect to their first character using bubble sort or any other sorting algorithm. I have my code here:


#include <iostream.h>
#include <conio.h>
#include <string.h>



main()
{
char name[10][25];


cout<<"Enter the Names:"<<endl;


//prompt user to input 10 names
for (int i = 0; i<=9; i++)
{
cout<<"Name"<<i+1<<": ";
cin>>name[i];
}



//display 10 names
for (int j=0;j<=9;j++)
{
cout<<name[j]<<endl;
}

getch();
}


MAXOOD!

Life is an endless journey towards perfection

__________________
MAXOOD!

Life is an endless journey towards perfection

Here's a generic bubble sort:
http://mathbits.com/mathbits/compsci/Arrays/Bubble.htm

You also need to look up strcmp which compares two strings, see for example:
http://www.cplusplus.com/reference/c...ng/strcmp.html

You may want to make sure that you truncate your strings to the 25 characters that you've allowed in the elements of your names array. You would typically do this with cin.read(char *buffer, int n) or use the setw function thus cin >> setw(25) >> name[i].



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Dear ciderpunx, thankyou very much for your useful tips. You have really added to my knowledge. I have the complete code now to sort 10 names wrt their 1st character.Now can you please tell me how to modularise this code by using user-defined functions. I'm a newbie in C++ so bear with me.


#include <iostream.h>
#include <string.h>
#include <conio.h>





main()
{
      char name[10][25];
      char temp[25];

      /*How to write and use this code through my own function*/
      for(int i=0;i<=9;i++)
      {
              cout<<"\nEnter name"<<i+1<<": ";
              cin>>n[i];
      }
      /******************************************/
      cout<<"The sorted names are: "<<endl;

       /*How to write and use this code through my own function*/
      for (int iteration=0;iteration<=9;iteration++)
      {
          for(int k=0;k<=8;k++)
          {
              if (tolower(name[k][0])>tolower(name[k+1][0]))
              {
              strcpy(temp,name[k]);
              strcpy(name[k],name[k+1]);
              strcpy(name[k+1],temp);
              }
          }

      }

    for(int l=0;l<=9;l++)
    {
            cout<<name[l]<<endl;
    }
     /******************************************/
getch();

}

Thanks!

MAXOOD!

Life is an endless journey towards perfection

using string arrays string[10] to hold names is a better choice than using c-style character strings char[10][]
there are many sorting algorithms for sorting strings and bubble sort is not an efficient sorting algorithm.you may want to use quicksort for internal sorting.so you want to work with functions.you can make 3 functions with you code.first one maybe named void getinput(*array) and you can get the names in this function into your array.another function maybe names output(*array) you can copy paste your code into this function to output names.and another function maybe named sortarray(*array) you can copy paste your code into that function that's simple.

//you can make it global so you dont need to pass it to each function for that little program.
//put the function prototypes here.

main()
{
      string name[10];
      GetArray(&name);
      SortArray(&name);
      cout<<"The sorted names are: "<<endl;
      OutputArray(&name);


getch();

}

void GetArray(&name)
{
  for(int i=0;i<name.length();i++)
      {
              cout<<"\nEnter name"<<i+1<<": ";
              cin>>string[i];
      }

}

void SortArray(&name)
{
string temp;
for (int iteration=0;iteration<=9;iteration++)
      {
          for(int k=0;k<=8;k++)
          {
              if (tolower(name[k])>tolower(name[k+1])
              {
              temp=name[k]; //these 3 lines are to swap elements in array
              name[k]=name[k+1];
              name[k+1]=temp;
              }
          }

      }

}

void OutputArray(&names)
{
    for(int l=0;l<=name.length();l++) //to avoid magic numbers dont use explicit numbers like 9
    {
            cout<<name[l]<<endl;
    }


}

well i am not an expert and i am sure i had some errors in the code but this is the logic.

It is often necessary to arrange the elements in an array in numerical order from highest to lowest values or vice versa.If the array contains string values, alphabetical order may be needed.The process of sorting an array requires the exchanging of values. While this seems to be a simple process, a computer must be careful that no values are lost during this exchange.
Ex. Suppose that grade[1] = 10 and grade[2] = 8 and you want to exchange their values so that grade[1] = 8 and grade[2] = 10.
================================================
Victor
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