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In POS system, cashier computer connect to printer using serial rs232 usb or cable. We need to capture data from that connection, and parsing the data to get total amount for every transaction at POS, then send it to database server via internet. if require, using raspberry or arduino, also gsm modem to send the data. While capture the data, the POS pc still print bill normally.
Skills required are C Programming, Electronics, Embedded Software, Microcontroller, Python
Assigning value to individual elements in array
Object Conversions Just like initialization, conversions are also done automatically when an object of a derived class is assigned to an object of the base class. Though, the c
Define Passing Structure to a Function? A structure is able to be passed as a function argument identical to any other variable. If we are merely interested in one member of a
y=2x-3?_(i=1)^(n+1)¦?i+2?
P o i n t er s to Members: In C a pointer is created to locate the address of another variable for faster access. Consider the following example. int x, *p; p =
Mathematical Statements and assignments Within C we can directly load up the variable from within the program using the mathematical expression equates (=) e.g. a= 'h'
Define the Data Types of c language? The C has a concept of 'data types' which are used to define a variable before its use and the definition of a variable will assign storage
what is programming?
A more advanced data type is the structure; here we can define a template as a collection of different variables e.g. struct birthdate { int month; int day;
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