string array reversing...

We allready posted a topic for turning around an String.
But we are no experts, so we don't really understande the code that was posted....

We need a EASY programm for converting a string:
from (for example)
ABCD --> DCBA

We allready made this:
#include "..\ownh.h"
#include "..\stdio.h"


int main (void)
{
/* Input of String-array *
char mystring [21] ;
printf ("fill in a string: ");
scanf ("%s",mystring);
printf ("The string you entered is: %s\n",mystring);

/* Rotation of string */
while (waarde1 > 0)
{
printf ("Rotation: %s\n",mystring+waarde1);

waarde1 = waarde1--;
}
printf ("%s",uitk);


pause ();
return 0;
}

Now we have the problem that we cant select 1 sign from the string, but only from a sign.

So we want to select each string value, and then paste them together in reverse angle....


Please help us....
No difficult C++ code (or the "strrev" command)... only this simple problem...

Code:

---

#include "..\ownh.h"
#include "..\stdio.h"


int main (void)
{
/* Input of String-array *
char mystring [21] ;
printf ("fill in a string: ");
scanf ("%s",mystring);
printf ("The string you entered is: %s\n",mystring);

/* Rotation of string */
while (waarde1 > 0)
{
printf ("Rotation: %s\n",mystring+waarde1);

waarde1 = waarde1--; 
}
printf ("%s",uitk);


pause ();
return 0;
}

---

waarde1 = waarde1--; is unnecessary, just having waarde1--; will do the same thing.

Not sure about your #includes, what kinda compiler you using and on what OS?

printf ("%s",uitk); is also not going to work, uitk is never defined ever. For that matter neither is waarde1.

What exactly is this rotation? Your trying to reverse a string right?

Heres an example of what I would do.

Code:

---

#include <stdio.h>
#include <string.h>

#define MAX 21

int main(void) {
  char string[MAX];
  int size;

  printf("Give me a string foo: ");
  scanf("%s", string);
  printf("String entered is: %s\n", string);
  size = strlen(string);
 
  printf("Here is string in reverse: ");
  while (size >= 0) {
    printf("%c", string[size]);
    size--;
  }

  return 0;
}

---

We programm in Windows 98, A windows Compiler (version 12.0)
linker version 6.0.

We use a "homemade programm" to link in Dos..
(Our teacher at school designed it..)
He also made the pause () command. So the Dos prompt doesnt close (first press a key...)

the programm you posted doesnt work, It goes through the compiler, but it the linker its stuck...

The Strlen command is wrong..


:confused: :confused: We dont know it anymore....

What error does the linker give? strlen works perfectly fine for me? Might have something to do with how you did your #includes before.

As for the pause thing, I use batch files to compile and execute my programs so I dont have to retype it everytime. In my batch file I include a pause so I dont have to put a pause in the program itself.

We made it.... :D :D
Got a little help from our teacher....

Here is the code:

#include "..\ownh.h"
#include "..\stdio.h"

#define MAXCHAR 10

int main (void)
{
/* Programma */
char mystring [MAXCHAR];
int ii = 0; /* aantal tekens */
int aantal;

printf ("voer string-waarde in: \n");
scanf ("%s",mystring);

while (mystring[ii] != '\0') ii++;


while (ii>=0)
{
printf ("%c",mystring[ii-1]);
ii--;
}
printf ("\n");

pause ();
return 0;
}