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I finally figured out what happens to previous data when a variable changes value

May 12, 20231 min read

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...

I finally figured out what happens to previous data when a variable changes value

All the exit codes and status in C

May 12, 20239 min read

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...

All the exit codes and status in C

proof that (N–1) + (N–2) + (N–3) + ... + 1= N*(N–1)/2

May 12, 20232 min read

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,...

proof that (N–1) + (N–2) + (N–3) + ... + 1= N*(N–1)/2

Time complexity

May 12, 20231 min read

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...

Time complexity

size_t

May 12, 20231 min read

size_t is the highest bit in your machine if your system is a 64 bit machine, size_t will be 64bits

size_t

I learnt something new about pointers.

May 12, 20232 min read

'*' can be used for pointer declaration and also as an indirection operator/valueof operator. its meaning depends on the context used.Pointers only...

I learnt something new about pointers.