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012. value of uninitialized primitive types

VBScript

JScript

Perl

PHP

Python

Ruby

PowerShell

Scala

F#

C

C++

same as C. However, C++ provides a no-argument constructor for each primitive type which zero-initializes it.

C++Builder

VC++

C#

compiler prevents use of uninitialized variables in some circumstances, and zero-initializes in others

Java

zero-initialized

Objective-C

stack variables and heap variables allocated with malloc have indeterminate values. Global and static variables and heap variables allocated with calloc are zero-initialized.

D

VB

VB.NET

Delphi

Ada

PL/SQL

T-SQL