i have declared an array a[20]

[Aniruddha Gohad]

a[20] and have scanned a name.
what will happen if all 20 memory allocations
arent used. i want to print the name in reverse.
will blank spaces be printed before the name??

[JavierL]

It will print gargbage if you havent initialized it, you can also put some character that you want in the non used chars and with an if print everything skipping those chars.

[donbock]

I assume that you mean that your 20-element array contains a null-terminated string whose length is less than or equal to 19. To print this string backwards you need to find the character preceding the terminating null and then print each character from there back to the beginning of the array.