switch a word

**wtr** · 08-03-2010

So the thing is you have to put in a name, like "wtr".
Then you have to check what's the length of the word.

Now we have to switch the other word, so new_worth have to become : rtw.

But my problem is after the loop to switch the word its still the same as wtr.

I think it must be made with pointers? But can anyone help me?

Code:

#include "stdafx.h"
#include <string.h>
#define AANTAL 8

int _tmain(int argc, _TCHAR* argv[])
{

	int i;
	int positie = 0;
	char word[AANTAL];
	char new_word[AANTAL];
	int ptr;
	printf("Put a word here: ");
	scanf("%s",&word);
	int length = strlen(word);
	strcpy(new_word,word);
	printf("%s",new_word);

	for(i=length; i>= 0;i--){
		scanf("%c",&new_word[i]);
	}

        //The problem must be here, new_word is still the same as before...


	printf("%s",new_word);
 
        //here i wanted to check iff the words are the same or not...

	ptr = strcmp(new_word,word);
	if(ptr == 0){
		printf("They are the same");
	}else{
		printf("They are not the same");
	}

	scanf(" ");
	return 0;
}

**Adak** · 08-03-2010

Welcome to the forum, Wtr!

I thought you were in the wrong forum, but I see your code is nearly all straight C, so good deal.

instead of using quote tags for your code though - use code tags - the # icon right next to the quote tag icon in the advanced editor window.

Just a few suggestions:

1) strcmp() returns an int, not a pointer.

2) you want to use fgets() to enter a string into an array:
fgets(arrayName, sizeof(arrayName), filePointer (or just stdin));

Look ma! No over-runs!

3) take out the ampersand & before word in scanf(). Word is the address to the base of it's own array.

4) When you use scanf() to get a char, you have to be REALLY careful. Remember that when you hit enter key, you leave a newline char in the keyboard buffer - scanf() doesn't remove it. No problem for numbers, scanf() jumps over newlines as "whitespace". Not so for char's - put this, after your scanf() line, inside the loop:

Code:

getchar();

and that will pull the newline char left behind by scanf(), off the keyboard buffer, and quit mucking up your input with scanf();

You should also add a getchar() line up above the first scanf() for a char, as well.

Common problem, and you may have others. This is just what I see looking right now.

**wtr** · 08-03-2010

ye oké, i know its return a integer...

But anyway, do you know how to do it? I must check iff the new_word is the same as word...

But the problem is i have to save new_word to the switch word iff you understand me? my english isnt so good.

First i need to read in the word like wtr -> WORD : WTR
then i have to switch it -> NEW_WORD : RTW

and then check iff the words are the same in this case it's not...

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