-- card: 16926 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 4755
-- name: 


-- part contents for background part 4
----- text -----
    printf("Enter age and weight separated by spaces:\n");

'printf()' is a function defined in the ANSI library, for formatted output to the STANDARD OUTPUT device - usually the screen.  (On UNIX systems, printf() output can be redirected to a file, and this is simulated in TC using the ccommand() library function.)

printf() accepts a character string (actually an array of char variables) as its first argument, optionally followed by additional arguments.  The escape sequence '\n' in the character string tells C to begin a new line following this output.

Notice that all function calls in C are expressions which represent a value (or void).  In fact, printf() returns the number of characters successfully printed, but we are ignoring this value here.

If a function is used in a C source file, the compiler requires either a declaration or a definition of the function in the source file as well.  The declaration for printf() is contained in the file stdio.h, which was #included into this file via the preprocessor*.

-- part contents for background part 27
----- text -----
Header files

-- part contents for background part 29
----- text -----
11521

-- part contents for background part 20
----- text -----
Header files - p20

-- part contents for background part 7
----- text -----
28