Unknown errors on multiple lines in C

Question

void functionality()
{
   int ll = 5
   char x = 'A';

   for (int i = 0; i < ll; i++)
   {
      printf("c  ", x);
   }
}

I am learning C language and I wrote the above snippet. However, it is not running with loads of errors. I cannot seem to find the problem of what is happening here since I followed the code from a tutorial and I have double checked everything.

int main()
{
   printf(functionality);
}

It has to be `%c` not just `c` in printf. Did you include needed headers: `#include `? To have a running program you need a `main` function see here: https://stackoverflow.com/a/45159215/8051589. — Andre Kampling, Jul 19 '17 at 11:16
_It is not running with a lot of errors._ So it does run without errors? Or doesn't it run but the compiler spits out a lot of errors? Please have a look at the [ask] section and then create a [mcve]. — muXXmit2X, Jul 19 '17 at 11:21

David · Accepted Answer · 2017-07-19T11:28:11.030

4

on the first glance of your code I can see 3 problems:

the line int ll = 5 is missing a ;

AND

the line printf("c ", x); should be printf("%c ", x);

AND

a missing } at the end

For next time, try to also provide the error codes, please.

The main function should look like this:

int main(){
   functionality();
}

The function is void, hence no need to call it in a print statement. Also, we call a function by first stating the name of the function followed by the curly braces. I suggest that you first familiarize yourself with the basic syntax of the language first.

edited Jul 19 '17 at 11:28

answered Jul 19 '17 at 11:16

David

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Hi this seems to have removed many errors but there is still another one in main function – John Yohanisberg Jul 19 '17 at 11:23
can you edit your post to include your main function, please? – David Jul 19 '17 at 11:24
done please check my question for edit – John Yohanisberg Jul 19 '17 at 11:25
updated my answer for you... – David Jul 19 '17 at 11:28
I will try it nnow – John Yohanisberg Jul 19 '17 at 11:30
Yes there is output! Thanks – John Yohanisberg Jul 19 '17 at 11:31
The `main` function should return something as the `main` function in C returns an `int`: https://stackoverflow.com/questions/3727051/why-does-a-main-function-without-a-return-statement-return-value-12. For example `EXIT_SUCCESS` or `0`. – Andre Kampling Jul 19 '17 at 11:38

score 3 · Answer 2 · answered Jul 19 '17 at 11:16

3

These errors are not unknown:

There is no main function, so there's nothing to run.
You are missing a closing } at the end of this function.
You are missing a ; at the end of int ll = 5;
Your printf call is malformed, Did you want printf("%c ", x);?
Where is your #include <stdio.h> (or does your compiler bring that in automatically?).

answered Jul 19 '17 at 11:16

Bathsheba

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hey thanks but i included only function with errors I have a main function – John Yohanisberg Jul 19 '17 at 11:18
1

The functionality(**void**) is missing. – Jeroen3 Jul 19 '17 at 11:19
OP changed it now there is a wrong main function... – Andre Kampling Jul 19 '17 at 11:29
@AndreKampling: The C standard requires compilers to add `return 0;` to `main` if missing. – Bathsheba Jul 19 '17 at 11:41
My comment (`OP changed it now [...]`) was about: `printf(functionality);` in the main function of the OP. But thank you, you answered my other comment under David Farrugias answer, as I didn't know that fact. – Andre Kampling Jul 19 '17 at 11:52
Just for completeness: The `return 0` is just added in the C99 standard. For ANSI C or C89 that doesn't apply, see the SO answer I refer to. – Andre Kampling Jul 19 '17 at 12:00

PhaniBhushan kolla · Answer 3 · 2017-07-19T11:23:31.273

0

you are missing a ; at the end of the line int ll=5

change the c to %c in the printf() function as follows

printf("%c",x);

also make sure you close all the braces properly at the end of the function.

make sure you have a main function in your program,and also include header files

edited Jul 19 '17 at 11:23

answered Jul 19 '17 at 11:18

PhaniBhushan kolla

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Unknown errors on multiple lines in C

3 Answers3