Any program or trick to find the definition of a variable?

Question

Many times when I am watching others code I just want to find where and how a variable is defined. Normally what I do now is look for the type of the variable until I find t

Answer 1

Grep for common patterns for variable declarations. Example: *, &, > or an alphanumeric followed by one or more whitespace characters then the name of the variable. Or variable name followed by zero or more whitespace characters, then a left parenthesis or a semicolon. Unless it was defined under really weird circumstances (like with some kind of macro), it works every time.