C Programming

What is malloc in C? The malloc() function stands for memory allocation. It is a function which is used to allocate a block of memory dynamically. It reserves memory space of specified size and returns the null pointer pointing to the memory location. The pointer returned is usually of type void. It means that we…

Key Differences between malloc() vs calloc() malloc() function returns only starting address and does not make it zero, on the other hand, the calloc() function returns the starting address and makes it zero. In malloc function, the number of arguments is 1, while in calloc function, the number of arguments is 2. malloc() time efficiency…

Key Differences between while and do-while loop in C While loop checks the condition first and then executes the statement(s), whereas do while loop will execute the statement(s) at least once, then the condition is checked. While loop is entry controlled loop, whereas do while is exit controlled loop. In the while loop, we do…

What is C? C is a programming language that was developed at Bell Lab in 1972 by Dennis Ritchie. The C language was developed with an objective of writing system software. It is an ideal language for developing firmware systems. C language combines the features of Low level as well as High-level Language. Hence it’s…

Key Difference between C and C++ C is a Procedural Oriented language, whereas C++ is an Object-Oriented Programming language. C supports only Pointers, whereas C++ supports both pointers and references. C does not allow you to use function overloading, whereas C++ allows you to use function overloading. C supports built-in data types, whereas C++ supports…

Key Difference Between C# and C++ C++ is a low level programming language that adds object-oriented features to its base language C whereas C# is a high level language. C++ compiles down to machine code whereas C# ‘compiles’ down to CLR (Common Language Runtime), which is interpreted by JIT in ASP.NET. C++ is an object-oriented…

What is Structure? Structure is a user-defined data type in C programming language that combines logically related data items of different data types together. All the structure elements are stored at contiguous memory locations. Structure type variable can store more than one data item of varying data types under one name. What is Union Union…

What is Typecasting in C? Typecasting is converting one data type into another one. It is also called as data conversion or type conversion in C language. It is one of the important concepts introduced in ‘C’ programming. ‘C’ programming provides two types of type casting operations: Implicit type casting Explicit type casting Implicit type…

Before you learn C Dynamic Memory allocation, let’s understand: How Memory Management in C works? When you declare a variable using a basic data type, the C compiler automatically allocates memory space for the variable in a pool of memory called the stack. For example, a float variable takes typically 4 bytes (according to the…