I'm learning C

[MikeyS9607]

Indeed I am. I already know a bit of basic guff like ints and doubles, and even comparisons. Does anyone know any good but basic tutorials I could use?

[MikeyS9607]

Alright. So I've made a basic program:

#include <cstdlib>
#include <iostream>

using namespace std;

int main(void)
{
    
    char string[50];
    
    printf("HAHAHA! \n");
    
   getchar();
   
   scanf("%s", &string);
   
   printf("\"%s\", He says!", &string);
   
      system("PAUSE");
   
}

and it works for the most part, but it cuts out the first letter on the printf("\"%s\", He says!", &string); function. EG "ASS" comes out as "SS". What gives?

[MikeyS9607]

SHIT! I had my editor set to C++. It still does that in C mode.

[pirateplatypus]

I haven't gotten around to any C yet, but Stanford's Essential C (pdf) seems like a pretty decent start.

[Diki]

I cannot recommend Learn C the Hard Way enough.
It's one of the the best books I've found on C, and it's free.

The C Programming Language is another excellent book, and it's co-authored by Dennis Ritchie, the designer of the C language.

[Diki]

At 9/20/12 12:01 PM, MikeyS9607 wrote: and it works for the most part, but it cuts out the first letter on the printf("\"%s\", He says!", &string); function. EG "ASS" comes out as "SS". What gives?

Well you have more than one problem here.

First you're mixing C and C++. <iostream> is a C++ header, and you're not returning an integer at the end of main(). Only C++ allows you to exclude that; you must always return an integer in C.

Secondly the string is being printed incorrectly because, I am pretty sure at least, you're passing a pointer to the string rather than the string itself (that's that the & operator does).
To print a string you simply just do this:

#include <stdio.h>

int main()
{
    char* foo = "hello world";
    printf("%s", foo);
    return 0;
}

Or if you want to use an array instead of a char pointer:

#include <stdio.h>

int main()
{
  char foo[50];
  
  scanf("%s", foo);
  printf("%s", foo);

  return 0;
}

You can pretty much think of an array as a pointer. It behaves the same way.

[Diki]

Woo triple post (I'm fancy).

using namespace std;

This is also C++ code; there is no std namespace in C.

[MikeyS9607]

At 9/20/12 02:29 PM, Diki wrote: Woo triple post (I'm fancy).

using namespace std;

This is also C++ code; there is no std namespace in C.

Yeah, i know. Thanks for the help.

[Redshift]

At 9/20/12 02:29 PM, Diki wrote: This is also C++ code; there is no std namespace in C.

No namespaces in C either.

[Diki]

At 9/21/12 11:10 PM, Redshift wrote: No namespaces in C either.

Ah, that's right.
I'm not as well versed in C as I should be and that slipped my mind. :)

[NickJohnson]

The book is " The C Programming Language " by "Brian W. Kernighan, Dennis M. Ritchie"......
Very good book......

[Trunks]

Applications Programming in ANSI C, by Johnsonbaugh & Kalin.

This book. This book is your best friend.

[egg82]

At 9/20/12 02:10 PM, Diki wrote: Learn C the Hard Way

I'm starting to see a pattern, here. Same author as "Learn Python the Hard Way" and "Learn C++ the Hard Way"?

[m0lecule]

At 10/9/12 10:12 AM, egg82 wrote:

At 9/20/12 02:10 PM, Diki wrote: Learn C the Hard Way

I'm starting to see a pattern, here. Same author as "Learn Python the Hard Way" and "Learn C++ the Hard Way"?

Afraid so...

[Diki]

At 10/9/12 10:12 AM, egg82 wrote: I'm starting to see a pattern, here. Same author as "Learn Python the Hard Way" and "Learn C++ the Hard Way"?

Yep. Same author; he gives all his books the same title.

At 10/9/12 03:48 PM, m0lecule wrote: Afraid so...

"Afraid so"? You say that like it's a bad thing.