Write menu key problems, poor look not to understand the C language foundation, great god give advic-CodePudding

Home > other > Write menu key problems, poor look not to understand the C language foundation, great god give advic

Write menu key problems, poor look not to understand the C language foundation, great god give advic

Time：02-09

C language foundation is bad, it's a bit don't understand a few questions in, big bosses help me
Main is below this sentence can't read

I don't understand KEY_PTxn [KEY_MAX] is what mean?
Why the KEY_PTxn initialize the array PIN_enum type?

KEY_MAX here identifies the size of the array, if the logo size that how much is this?

A5 and A6 in these pins respectively corresponding to the KEY_e enumeration values?
PIN_enum and KEY_MAX initialization below