Convert from ascii to int

Using Arduino Programming Questions
#1

Dear all, how can I convert from ascii to integer??

Is there any formula?

Tnx

#2

standard C funtion called atoi

int atoi ( const char * str );

#3

This question comes up all the time. Why isn't in the Reference section I wonder?

#4

atoi() is a function that is part of the AVR libc library The Reference homepage provides the following info:

The Arduino language is based on C/C++. It links against AVR Libc and allows the use of any of its functions; see its user manual for details.

with links to the Libc reference and user manual.

So, in short, it is in the Reference section.

#5

Another more flexible option is strtol() http://avr-libc.nongnu.org/user-manual/group__avr__stdlib.html#gaf8ce3b8dae3d45c34c3b172de503f7b3

#6

Three days ago:

http://arduino.cc/forum/index.php/topic,51209.0.html

#7