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Unit-I

Unit-I: Fundamentals of C Program: Introduction, History, Importance, Basic Structure, Writing and Executing a C Program, Pre-processors in “C”. Data Types and I/O operations: Keywords, Constants, Variables, Scope and Life of a Variable, Data types, Storage classes, Reading a character or values, Writing a character or value, formatted Input and Output operations. Unit-II: Operators & Expressions: Introduction, Operators (Arithmetic, Relational, Logical, Assignment, Conditional and Special operators), Expressions (Arithmetic, Evaluation), Type conversions, Sample Programs. Control Flow (Branching & Looping): Introduction, If statements, If-else statements, Switch statements, Conditional statements, While statements, Do statements, For Statements, Sample programs. Unit-III: Arrays: Introduction, Defining an array, initializing an array, Onedimensional array, Two-dimensional array, Dynamic array, Sample programs. Strings: Introduction, Declaring and initializing string variables, Reading and Writing strings, string handling functions, sample programs. Unit-IV: Built – in functions: Mathematical functions, String Functions, Character functions, Date functions. Sample programs. User – defined functions: Introduction, Need for user defined functions, Elements of functions, Return values and their types, function declaration, function calls, Recursive functions. Sample programs. Unit-V: Structures and Unions: Introduction, Declaring structures variables, Accessing structure members, Functions and Structures, Array of structures, Enumerated Data types, Unions, Introduction to pointers, Passing parameters to functions, Sample Programs.