File handling in C Language Files management is very important aspect in any of the programming language. C Language has a very specific file handling mechanism to open, close, update and edit the files. Using file handling in C Language we can store the data in text or binary files for later use. File handling …
File, Stream standard I/O File A file is actually a region of memory space in physical storage devices like disk drives, tape drives, printers, monitors, etc. The huge amount of data can be stored in the form of files in hard disks and auxiliary devices. These files in two categories based on the way they …
Preprocessor Directives in C Preprocessor Directives The preprocessor is a translation phase that is applied to the source code before it is handed over to the compiler. The preprocessor commands can form a whole new language itself. The preprocessor performs textual substitutions on the source code in three different ways – File Inclusion – …
Dynamic Memory Allocation in C Dynamic memory allocation is allocation of memory only when it is needed, that is, at run time (when the program is running). It enables us to create data types and structures of any size and length to suit our program’s need within the program. Using static memory allocation in C, …
Recursion in C Recursion A function can call itself directly or indirectly is called recursion, and the function that calls itself (directly or indirectly) is known as recursive function. In C Language, any function can call itself, including main( ) function. Example main( ) { printf(“Ha Ha Ha…! I cannot stop …
Bit Fields in C Language Bit fields It seems a wastage of memory when we need few number of bits but the data types provided by the language are not appropriate according to our need. For example, to define a true/false flag, we just need a single-bit flag (when the bit is 0 it means …
Structures in C Language Data types are of two types primitive and non-primitive. Primitive data types are basic one and non-primitive data types are user defined data types. For example arrays, which are the data structures whose individual data elements are all of the same type. But data structure whose individual data elements differ in …
String Handling in C A string in C Language can be defined as a character array terminated with a special character ‘\0’ to mark the end of the string. Unlike some other high-level languages like BASIC language, C does not have built-in “string” type data. So, C has no built-in facilities for manipulating entire arrays(such …
Pointer in C Language Let us understand what are the pointers in C, the Pointer operator (*) is used heavily in C Language and also called “value at address“ operator, it is used to fetch the value stored at a particular address. The pointer operator is also known as indirection operator, and has just the …
Functions A function is a self contained block of code that does some specific task. A function definition has a header and body. Header A header of a function is made up of Return type: It is the data type of the value being returned by the function. If a function has no value …
