Can anyone explain this code.

Question

#include <stdio.h>
#include <ctype.h>
int main() {
char c;
c = 'z';
printf("\n %c->%c", c,tolower(c));
c='A';
printf("\n %c->%c", c,tolower(c));
c= 9;
printf("%c->%c", c,tolower(c));

return 0;
}

Answer 1

Sachin Shah You are printing the value 9 as a char. 9 in ASCII is a horizontal tab character.

http://www.asciitable.com/

Answer 2

https://devdocs.io/c/string/byte/tolower

"... Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale... "

Is there anything else you do not understand about the code?

Answer 3

Yeah thanks dude Hatsy Rei

Answer 4

But in third case what happened Hatsy Rei