Write program to convert a string into lower case in C C++ Code Example

A PROGRAM TO CONVERT STRING INTO Lower Case   in C C++ Code Example
Write a c C++ program to convert the string from lower case to upper case using Loops ANSI

/* =========================================================================

     A PROGRAM TO CONVERT STRING INTO

      [LOWER CASE]

=========================================================================== */

#include<stdio.h>

#include<conio.h>

#include<string.h>           

#include<ctype.h>         

void main(void)

{

char ch, string[80];

int length, index;

do

 {

  clrscr();

  puts("ENTER THE STRING");

  gets(string);

  length=strlen(string);    

  for(index=0;index<length;index++)

   {

/////////////////////////////////////////////////////////////////////////////

    if((string[index] >='A')&&(string[index]<='Z'))  // LOWER CASE CHECK

    string[index]=_tolower(string[index]);          // FUNCTION TO CONVERT

  //  STRING TO LOWER CASE

////////////////////////////////////////////////////////////////////////////

   }

  puts(string);

  printf(" \n [PRESS '-' TO EXIT  &  '+' TO CONTINUE]\t");

  ch= getche();

 } while((ch!='-'));

getch();

}