IF statement. Variables

Question

I am trying to implement an IF STATEMENT
in my C-Server.

read(client_fd,received_data,100);
printf("%s",received_data);

I want to print "ooo" if the received data equals to "test"

if (received_data == "test") {
printf('ooo');
}

?

The above example results in errors. (can't compile)

I don't know much C.

UPDATE :

Now I can compile fine ( after changing 'ooo' to "ooo" )
But although I am sending "test" to it.. if statement is not doing anything i think.

Multiple problems.. Strings in C have to be inside double quotes, characters are inside single quotes. You cannot compare strings using `==`, use `strcmp()` — Haris, Feb 16 '17 at 11:45
"results in errors" — And what does the error message say? — Quentin, Feb 16 '17 at 11:45
@Haris, using double quotes fixed compile errors. I sent "**test**" to it but if statement is not being triggered I think. I tried "**=**" instead of "**==**" .. compile errors. — Joey, Feb 16 '17 at 11:50
@Joey, use `strcmp()`. In case of strings `=` or `==` will not work. — Haris, Feb 16 '17 at 11:51

score 1 · Accepted Answer · edited Feb 16 '17 at 11:55

1

The == doesn't work for const char *. Use strcmp instead.

edited Feb 16 '17 at 11:55

HolyBlackCat

answered Feb 16 '17 at 11:46

Piotr Kamoda

how do you use it ? **if (received_data strcmp "test")** ? – Joey Feb 16 '17 at 11:52
The answer sounds a bit misleading to me. `==` does work for `const char *`, but not in a way OP thinks it does... – HolyBlackCat Feb 16 '17 at 11:53
@HolyBlackCat I don't get that comment – Piotr Kamoda Feb 16 '17 at 11:55
@PiotrKamoda Sorry, that was a typo. Edited. Do you get it now? – HolyBlackCat Feb 16 '17 at 11:56
1

Right, I didn't go into too much detail with that xD Let's say it's a simplification. – Piotr Kamoda Feb 16 '17 at 11:58

1 Answers1