Long story short, what would be the most efficient way to extract chars from a string.

Lets say my string is "1 + 99 - ( 10 * 2 )"

how would I extra each character ['1' ,'+' ,'99' ,'-' ,'(' ,'10' ,'*' ,'2' ,')' ] while skipping the spaces.
I will be putting those chars into a char dyanmic array, so char_dynamic_array[0] would be '1', char_dynamic_array[1] will be '+', and so on.

You will need to parse out the spaces yourself with a regex or string replace function.

I would use the string iterator and string erase method to do this.



The first finds all locations of space, and the second deletes them all until the end of the string.

i dont think that solves the problem. Correct me if im wrong, but that code just deletes all of the spaces, and makes a new string without the spaces.
then im assuming i would make a for loop and assign array[iterator]= string[iterator], to fill the string into the array, but it wouldnt be able to support 2 digit numbers , like 10, and 99.

What i need is to get the first digit '1' from the string, store that into a char array[0], so i assume some type of string to char conversion has to go down.
skip the space
char '+' store it in array[1]
skip the space
char '99' store it in array[2]
skip the space
char '-' store it in array [3]
skip the space
etc, till all of the chars excluding the spaces are in the array.

that array of chars is going to be analyzed to see if the array[iterator]is going to be a number, operator, or a parenthesis, then go through other processing.

This post was edited by Pino38 on Apr 8 2015 02:18pm

The second code block removed all spaces.
The first converts the string into a C string (character array).