fclose function, 515
fgets function, 477-478, 512-515
file handle, 359
flags, 71, 174, 183, 212, 217-219, 335-336, 533-534
in DEBUG, 221-223
testing with conditional jump, 332, 334, 339
Flags register, 174, 183, 212, 217, 219
in bit shifting, 324
in gdb versus DEBUG, 437
fopen function, 512-514
formatting codes, for printf, 473-474, 476
fprintf function, 516-517
Free Software Foundation, 408
functions, in C, 454, 458. See also specific functions