Basically I have This Format from a input file. Im using the getline function to read get each line. Lets say the strings name is string, im basically using string[0] to Test if the first letter is a "D", if that test succeeds, them I basically need to get the value of string[7] to convert it into an int, then that number will go through further processing. So my problem is how would i convert the string[7] from a char to an int. And also in the case of Day04, where there is now a number in 2 digits, how will i be able to extract both string[7] and string[8] and convert them to the number 14.

ps. I suck at programming , so this is the method i came up with to get the data xD.


Vendor: Smith Levi
Product: Dank Cookies
Day01: 1
Day02: 5
Day03: 6
Day04: 14



tl;df version

What would be the simplest way to get the numerical values from these strings. ( the 1,5,6,14)

is this in c or c++

You'll likely want to use this: http://www.cplusplus.com/reference/cstdlib/atoi/

This post was edited by Aimed_Shot on Oct 22 2014 07:09pm

wow xD the most essential part of the problem just flew right past me

its c++

I think you could do...



make sure to include stdlib

atoi is such a C thing to do. I'm pretty sure there is a integer method for strings like .to_i()

Edit:: I was wrong, although you can simply do this:



Pretty sure that works in C++ all be it, it wont be nowhere as fast as atoi.

This post was edited by AbDuCt on Oct 22 2014 07:39pm

e/ ignore

This post was edited by SelfTaught on Oct 22 2014 07:34pm

Than

thank you very much sir

ill try to integrate that into my code , and get it working. Thanks again!







I will try to look into that possibly when i got the time, but right now im going to use almed_shots method. im racing the clock xD

This post was edited by Pino38 on Oct 22 2014 07:40pm

There's std::stoi you should use in C++, but my suggestion is that you use something more robust, for example a regex.