#c

Articles tagged with #c

I finally figured out what happens to previous data when a variable changes value
whenever you reassign a variable, the old value doesn't get erased by the new one; the variable simply switches to refer to the new value. The effect is like moving a sticky note from one object to another.a = 10 a = 12when you do something like th...
May 12, 20231 min read9
All the exit codes and status in C
I came across this when doing the shell project.There was only two available to me 126(permission) and 127(command not found) So I started researching, trying to find other exit codes, so many websites gave different meanings for different exit cod...
May 12, 20239 min read647
proof that (N–1) + (N–2) + (N–3) + ... + 1= N*(N–1)/2
I got this formula from a data structure book in the bubble sort algorithm. (N-1) + (N-2) +...+ 2 + 1 is a sum of N-1 items. Now reorder the items so, that after the first comes the last, then the second, then the second to last, i.e.(N-1) + 1 + (N-2...
May 12, 20232 min read12
Time complexity
Time complexity is a measure of the amount of time required for an algorithm to solve a problem as a function of the size of the input. It refers to the number of operations performed by the algorithm, relative to the size of the input.
May 12, 20231 min read28
size_t
size_t is the highest bit in your machine if your system is a 64 bit machine, size_t will be 64bits
May 12, 20231 min read3
I learnt something new about pointers.
'*' can be used for pointer declaration and also as an indirection operator/valueof operator. its meaning depends on the context used.Pointers only store addresses not values Eg: int a = 10;Pointer declaration and initialization, are still done with ...
May 12, 20232 min read6