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. Originally, the word computing was synonymous with counting and calculating, and a computer was a person who computes. ... A programming language or computer language is a standardized communication technique for expressing instructions to a computer. ... In computer science, a datatype (often simply type) is a name or label for a set of values and some operations which can be performed on that set of values. ...

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. In computing, strongly-typed, when applied to a programming language, is used to describe how the language handles datatypes. ... The C Programming Language, Brian Kernighan and Dennis Ritchie, the original edition that served for many years as an informal specification of the language The C programming language is a standardized programming language developed in the early 1970s by Ken Thompson and Dennis Ritchie for use on the UNIX operating... C++ (pronounced see plus plus) is a general-purpose computer programming language. ...

 int a = 5; float b = a; //exchanging values :) 

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 */ /* Priya used this... :) */ 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++ */