some word meaning of "C"

CLRSCR = it means it clears the screen....
GETCH = execute the scree or show the output to the user..
INCLUDE = it is a file in c..
PRINTF = print whatever given by the user...
SCANF = runtime deceleration...
INT = it is integer key file..
FLOAT = include all the decimal numbers...
DOUBLE =  include both int and float...
CONIO = console input and output..
STDIO = standered  input output...