Converting lower to upper case in turbo c is very easy and we can do it toupper, tolower , isupper and islower functions.

Converting lower to upper case in turbo c is very easy and we can do it toupper, tolower , isupper and islower functions.

Source Code

---

#include <stdio.h>

#include <conio.h>

#include <ctype.h>

void main()

{

printf("ESC to break\n");

while(1)

{

char ch = getch();

if( ch == 27)

break;

if(islower(ch) != 0)

putch(toupper(ch));

else

putch(ch);

}

}