Function Names

Usually every function performs an action, so the name should make clear what it does.

Suffixes are sometimes useful:

• max – to mean the maximum value something can have.
• cnt – the current count of a running count variable.
• key – key value.

Prefixes are sometimes useful:

• is – to ask a question about something. Whenever someone sees is they will know it’s a question.
• get – get a value.
• set – set a value.

Good

bool is_even(unsigned int i) {
  if (i % 2 == 0) return true;
}

bool is_odd(unsigned int i) {
  if (i % 2 == 1) return true;
}

Bad

bool helper1(unsigned int i) {
  if (i % 2 == 0) return true;
}

bool helper2(unsigned int i) {
  if (i % 2 == 1) return true;
}