local variables

internal variables

external variable

global variables

int

unsigned

int

unsigned

finds hypotenuse of triangle with sides a + 2 and b+3

finds square root of (a + 2)2 + (b + 3)2

is meaningless

finds square root of 3*a + 4*b + 5

cannot be initialized

is initialized once at the commencement of execution and cannot be changed at run time

retains its value throughout the file of the program

is same as an automatic variable but is placed at the head of a program

beginning of the program

beginning of the program

that certain information about mathematical library functions are to be included at the begnning of the program

none of these