Seperate string into 2 based on last + sign in the string

Hi,

If I have this string 'Hello+Julie+I-was-here', how do I get this expecting result with C programming?

'Hello+Julie'

'I-was-here'

Another example,

String: 'I+am+really+tired+mememe-is-now-at-home'

Result:

'I+am+really+tired'
'mememe-is-now-at-home'

As noticed, I will want to break up my string into 2. Based on the last + sign from the back in the string, I will separate the string into 2 separate strings. How am I suppose to do this?

Erm... What about looping through the string, mark the last + you found, replace it by a null character, and add one to get the second string..?
You could copy the string, which you have to if it's a constant string, but if not it's too much overhead.
Although, 99% of the cases the string should really be constant in this case ;).

Quote:

---

Originally Posted by EVOEx

Erm... What about looping through the string, mark the last + you found, replace it by a null character, and add one to get the second string..?
You could copy the string, which you have to if it's a constant string, but if not it's too much overhead.
Although, 99% of the cases the string should really be constant in this case ;).

---

Sorry but how do I actually code that? I am really new to this C programming and so I am not so sure about it.

Before you can learn any trick riding skills, you have learn how to actually ride the horse, a little.

This requires using a string (a char array[]), and working with an index with that array - not the only way but probably the simplest.

Learn about using a char array and an index, and how to print a string, and a newline. Then your answer will be made clear to you, and you will have learned something valuable in the process.

Quote:

---

Originally Posted by Adak

Before you can learn any trick riding skills, you have learn how to actually ride the horse, a little.

This requires using a string (a char array[]), and working with an index with that array - not the only way but probably the simplest.

Learn about using a char array and an index, and how to print a string, and a newline. Then your answer will be made clear to you, and you will have learned something valuable in the process.

---

Ok, do you have any reference that I can refer to?

A good place to start is Ivor Horton's book - "Beginning C".

Covers all the basics, in a down to earth style. Also, has several examples of great problem solving, using the basics discussed in the previous chapters.

K&R "The C Programming Language" is excellent, but not for beginners.

There are many C tutorials on-line, but you'll have to Google them up.

Actually, it is not say I do not want to learn. But I am stuck and rushing to meet the dateline so I do not have time to look for these books.... Is ok.... I will look at other places.

I am really sorry..... I am really desperate for help... Can anyone guide me what I should really do? I don't even know how to begin.

use strrchr to find the last '+' character and then replace it with 0 (like strtok does) or strncpy first part of the string to the side...

Quote:

---

Originally Posted by vart

use strrchr to find the last '+' character and then replace it with 0 (like strtok does) or strncpy first part of the string to the side...

---

Hi Vart,

Thanks for your help.

But I need your help further.

For this string:

String: 'I+am+really+tired+mememe-is-now-at-home'

With strrchr, I was able to get 'mememe-is-now-at-home'.

But the problem is how do I get I+am+really+tired?

Does anyone knows about it?

Quote:

---

Originally Posted by JuzMe

Hi Vart,

Thanks for your help.

But I need your help further.

For this string:

String: 'I+am+really+tired+mememe-is-now-at-home'

With strrchr, I was able to get 'mememe-is-now-at-home'.

But the problem is how do I get I+am+really+tired?

Does anyone knows about it?

---

show the code u have made till now.

that's easy. Like vart said:

Code:

---

char *end = strrchr(string, '+');            /* Get the last occurrence of '+' */
end[0] = '\0';                              /* Replace it with a nul byte */
end++;                                      /* Skip it */

---

string is I+am+really+tired, and end is mememe-is-now-at-home

Thank you. It works