Naming variables has a major effect on how hard it will be for a person to follow the code, whether it is the same person who wrote it or someone else. To avoid confusing others, many programmers use the Hungarian Naming Convention when naming variables. This way, variables of same type have the same prefixes.
Prefix Typef booleanch charsz zero-terminated stringfn functionw wordb bytel longu unsigned wordbit a single bitv voidp pointeri index to an arrayh handlemp an array
And so on…
Here are some examples:
char szName, *pchSex;int uAge;int fIsMarried;int mpChildAges;etc.