C is a procedural language, which means it follows a series of steps/procedures in a systematic order to solve a problem. These procedures are often organized in functions. These functions take in some value(s) as argument(s), operate on them and return an output. But apart from this approach, a function can even change the state of other variables in the global scope, perform input/output operations etc.
Pointer is something that points to the memory location where the value of a variable is stored. Pointers have data-types. This data-type has nothing to do with the value of the pointer itself, because a pointer has a value which is an address, i.e. a number. So the value of a pointer is always an int.
Today we are going to discuss about arrays in C. Arrays is a data structure that can store a fixed-size sequential collection of elements of the same type. In order to understand arrays we must first understand the meaning of the highlighted words of the above definition in terms of programming.
Today is 9th September, the birth anniversary of the creator of C programming language, one of the creators of Unix operating system and one of the forefathers of high level programming, Dennis MacAlistair Ritchie. As we are currently doing a series on C, let us talk about his influence in Computer Science.
Today we are going to discuss about conditionals and loops in programming in general and the syntax of them in C. Conditional statements are those which check the validity of a statement, by implementing logical operations in the CPU and returns a true or false(1 or 0). In C language we do not have the boolean datatype or the values ‘true’ and ‘false’. Here 1 represents true and 0 false. In the hardware, a certain bit in a register (also called flag) is set or unset (a 1 or 0) after the logical operation is performed. This bit is then checked, and depending upon its value the subsequent lines of code are executed.