Converting an array of string to uppercase

Here is a program to convert an array of string into uppercase. Just like a recent post : "lowercase to uppercase" the following program also uses the standard C++ functions such as toupper() to convert string from lowercase to uppercase.

Now, the process is the same as converting a single string, traversing the entire string  using a loop and converting each
character from lowercase to uppercase(or vice-verse) using toupper() (or tolower() ) and storing the converted characters
into another string.

The only difference that comes in an array of strings is that a loop has to be used to process individual strings sorted in the
array.Consider the string as columns of students in a classroom with each of the student sitting in the front desk as the
starting index of that column.

NOTE : be sure to add a terminating null character ('\0') at the end of each converted string, as this is not done by default by the
toupper() function !!!! :O

Here is an sample program.

// Program to convert an array of string to uppercase

#include <iostream>
#include <cctype>

int main()
{
     char name[5][20];
     char temp[5][20];
     int size;
     // prompts the user to enter the no. of string he/she wants in the array
     std::cout<<" Enter the no. of names you want to insert (max 5 ) : ";
     std::cin>>size;
     std::cin.ignore(); // to clear the memory buffer
     std::cout<<" \n Now enter the names (max 20 characters long ) : \n ";
     for (int i=0; i<size; i++)
     {
          std::cout<<" Name "<<i<<" : ";
          std::cin.getline(name[i],sizeof(name[i]));
     }
     // to convert them into uppercase
     int j=0;

     for (int i=0; i<size; i++) // main loop to traverse the rows
     {
          for (j=0; name[i][j] != '\0'; j++) // sub loop to traverse the individual strings
          {
               temp[i][j] = toupper(name[i][j]); // converts each character to uppercase
          }
          temp[i][j] = '\0'; // adds a terminating null character at the end of each string

     }
     // to show the names in uppercase

     for (int i=0; i<size; i++)
     {
          std::cout<<"\n NAME "<<i<<" : "<<temp[i];
     }
     return 0;
} // end of main

------ OUTPUT ------

Please do comment if you don't understand any part or want to know more or just want to say thanks. I love programming and love to teach my friends. Your suggestions and appreciation will make this blog much better.


------ Related Posts ------ 
Lowercase to Uppercsae : http://programsplusplus.blogspot.in/2012/01/lowercase-to-uppercase.html

Uppercase to Lowercase : http://programsplusplus.blogspot.in/2012/01/uppercase-to-lowercase.html