i need to do the following program with the help of pointers....please help me out....


i tried doing it this way...it's working also but now i need to pass on the reversed string to another function.....this is something i simply dont know....help me out in this:



This post has been edited by jjhaag: 29 Oct, 2007 - 11:59 PM

To use pointers to traverse/manipulate a c-string, keep in mind that *(array+i) can be used much the same as you would use array[i]. In fact, this is basically what the [] operator does - it performs a pointer arithmetic step using the base address of the array, then a dereferencing step to access a particular element.

Any time you pass a string to a function with a pointer argument, you're modifying the original string. So you can pass that same string on to a new function much as passed it in the first place.

And you don't need to create a new post when dealing with the exact same code. If you don't understand something or have further problems with your code, just reply in the original thread.

-jjh

i am really sorry but i didnt got anything.......i am very weak in concepts of pointers...i understand them but i dont get it very easily as to how to implement them.....so please help me..........

You need to be more clear with your questions. The only way that you're going to receive help is if you make it possible for us to help you. We appreciate it when members are polite, and say please when posting questions, but when the entire post consists of not much more than the source code and "please help", there's not much we can do. In that case, the only thing that would really clear up your problem would be to write your assignment for you, but that's in violation of forum policy.

That being said, have you tried to implement the suggestion in the post above? i.e. have you actually gone into your code and tried replacing the array subscript notation (e.g. str[i]) with the pointer arithmetic notation (e.g. *(str+i))? The only way to learn a language is to actually get in there and try it.

And I would also recommend that you work through the tutorial on pointers by Dark_Nexus - and actually work through it, trying out the examples to see how they work, rather than just reading it. The examples are clear and well thought out, and they are short and simple enough that they can be worked through quickly and easily.

Hope that helps,

-jjh

but when i am using instead of then this is giving an error....whot should i do now...

Look again - for dereferencing a pointer arithmetic expression, those should be parentheses like this *(str+i), not brackets like this *[str+i].

fine.....i did that and it's working but please do tel me how to store this result of reversed string so that i can pass it into a different function of same program....

I don't want to sound rude but you need to get some book or start reading some tutorials, first. Then if things are not clear, ask questions, and try to be more specific and concrete. Thanks.