Weak typing
In computing, Weak Typing, when applied to a
programming language, is used to describe how the language handles datatypes. "Weak Typing" is the strict enforcement of type rules but with well-defined exceptions or an explicit type-violation mechanism. Weak typing is "friendlier" to the programmer than strong typing, but catches fewer errors at compile time. C and C++ are weakly typed, as they automatically coerce many types e.g. ints and floats. E.g. int a = 5;
float b = a;
They also allow ignore typedefs for the purposes of type comparison; for example the following is allowed, which would probably be disallowed in a strongly typed language: typedef int Date; /* Type to represent a date */
Date a = 12345;
int b = a; /* What does the coder intend? */
C++ is stricter than C in its handling of enumerated types: enum animal {CAT=0,DOG=2,ANT=3};
enum animal a = CAT; /* NB The enum is optional in C++ */
enum animal b = 1; /* This is a warning or error in C++ */
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