Init: tests sizeof() on a number of different parameters
Init: tests dynamic memory allocation of pointer to a pointer
Init: solution to ex. 1-12
Init: solution to ex. 1-13 (horizontal histogram)
Distinguishes between the horiz hist & the vert hist.
Moved to 1-13_h.c
Cosmetic changes
Init: solution to ex. 1-13 (vertical histogram)
Init: test input for histograms
19+ -> 20+ (more senible)
Init: ignores binaries