*Fundamentals of Programming: Starting with definitions of Computer,Software, difference between data and information,Memory and it's types, various storage devices,Compiler,interpreter,basic structure of Computer, basic syntax of program.
*Operators, Datatypes,Control Statements: You must know the different types of operators and it's uses, classification of data which include primary datatypes, user-defined and derived datatypes and also controlstatements.
*Arrays and Strings: Here you must go through the concept of 1D arrays, multidimensional arrays and how to declare and where to use .For string too go through the concept of it .
*Basic algorithm:Go through the topics here like searching,sorting and the types and how to use them .
*Functions:Go through the concept of functions ,it's types, parameters, recursion.
*Pointers: Here go through uses of pointers and how to use in program.
*File handling:Go through the various functions available for file handling.