WebDec 4, 2014 · The extern keyword introduces a variable declaration, not a definition. It says that somewhere in some source file there will be a variable defined with the given … WebThough ULIPs (Unit Linked Insurance Plan) are considered to be a better investment vehicle it has failed to capture the imagination of the retail investors in India because of which of …
Is the following statement declaration or definition extern int i
WebFeb 14, 2024 · The qualifier const can be applied to the declaration of any variable to specify that its value will not be changed ( Which depends upon where const variables are stored, we may change the value of const variable by using pointer ). The result is implementation-defined if an attempt is made to change a const. 1) Pointer to variable. C. int *ptr ... WebSep 30, 2011 · extern int a; is a declaration. It does not allocate space for storing a. extern int a = 42; is a definition. It allocates space to store the int value a and assigns it the value 42. here the variables are declared inside the main () function where its definition was defined outside in the global declaration section. pupil reaction to opioids
Understanding "extern" keyword in C - GeeksforGeeks
WebOct 6, 2014 · C Storage Classes - placement questions answers. 1. Longevity of a variable refers to. a) The duration for which the variable retains a given value during the execution of a program. b) The portion of a program in which the variable may be visible. c) Internal linkage of a variable. d) External linkage of a variable. View Answer / Hide Answer. 2. WebApr 13, 2024 · Storage Classes are used to describe the features of a variable/function. These features basically include the scope, visibility and life-time which help us to trace … Webextern int a; indicates that the variable a is defined elsewhere, usually in a separate source code module. printf("%d\n", a); it prints the value of local variable int a = 20. Because, whenever there is a conflict between local variable and global variable, local variable gets the highest priority. So it prints 20. pupil rarity dragon adventures