l-value or location value refers to an expression that can be used on left side of assignment operator. For example in expression “a = 3”, a is l-value and 3 is r-value. l-values are of two types: “nonmodifiable l-value” represent a l-value that can not… Read More »What is l-value?

1) The expression ‘i++’ returns the old value and then increments i. The expression ++i increments the value and returns new value. 2) Precedence of postfix ++ is higher than that of prefix ++. 3) Associativity of postfix ++ is left to right and associativity… Read More »What is difference between i++ and ++i?

Uninitialized pointers in the C code are known as Wild Pointers. These are a point to some arbitrary memory location and can cause bad program behavior or program crash.

C is a procedural language. The main features of C language include low-level access to memory, simple set of keywords, and clean style. These features make it suitable for system programming like operating system or compiler development.

Both functions are to retrieve absolute value. abs() is for integer values and fabs() is for floating type numbers. Prototype for abs() is under the library file < stdlib.h > and fabs() is under < math.h >.

A function, which has a function definition prefixed with a static keyword is defined as a static function. The static function should call within the same source code. In C, functions are global by default. The “static” keyword before a function name makes it static.… Read More »Describe static function with its usage?

A local static variable is a variable whose lifetime doesn’t end with a function call where it is declared. It extends for the lifetime of complete program. All calls to the function share the same copy of local static variables. Static variables can be used… Read More »What are local static variables? What is their use?

The words that are part of the slandered C language library are called reserved words. Those reserved words have special meaning and it is not possible to use them for any activity other than its intended functionality. Example void, return int.

Break can appear only with in the looping control and switch statement. The purpose of the break is to bring the control out from the said blocks.

There are two possible methods to perform this task. 1) Use increment (++) and decrement (-) operator. Example When x=4, x++ returns 5 and x- returns 3. 2) Use conventional + or – sign. When x=4, use x+1 to get 5 and x-1 to get 3.