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The end-loop marker specifies the name of the index variable, which must correspond to the name of the index variable at the start of the for-loop. Some languages (PL/I, Fortran 95, and later) allow a statement label at the start of a for-loop that can be matched by the compiler against the same text on the corresponding end-loop statement.
The choice of a variable name should be mnemonic — that is, designed to indicate to the casual observer the intent of its use. One-character variable names should be avoided except for temporary "throwaway" variables. Common names for temporary variables are i, j, k, m, and n for integers; c, d, and e for characters. int i;
Uninitialized variables are powerful bugs since they can be exploited to leak arbitrary memory or to achieve arbitrary memory overwrite or to gain code execution, depending on the case. When exploiting a software which utilizes address space layout randomization (ASLR), it is often required to know the base address of the software in memory.
Several compilers support variable-argument macros when compiling C and C++ code: the GNU Compiler Collection 3.0, [4] Clang (all versions), [8] Visual Studio 2005, [6] C++Builder 2006, and Oracle Solaris Studio (formerly Sun Studio) Forte Developer 6 update 2 (C++ version 5.3). [9] GCC also supports such macros when compiling Objective-C.
In computer programming, lazy initialization is the tactic of delaying the creation of an object, the calculation of a value, or some other expensive process until the first time it is needed.
An identifier I' (for variable X') masks an identifier I (for variable X) when two conditions are met I' has the same name as I; I' is defined in a scope which is a subset of the scope of I; The outer variable X is said to be shadowed by the inner variable X'. For example, the parameter "foo" shadows the local variable "foo" in this common pattern:
C++ Name Mangling/Demangling Quite detailed explanation of Visual C++ compiler name mangling scheme; PHP UnDecorateSymbolName a php script that demangles Microsoft Visual C's function names. Mixing C and C++ Code; Levine, John R. (2000) [October 1999]. "Chapter 5: Symbol management". Linkers and Loaders. The Morgan Kaufmann Series in Software ...
Another strategy, when suspecting a small set of classes, is to temporarily make all their member functions virtual: after the class instance has been destructed/freed, its pointer to the Virtual Method Table is set to NULL, and any call to a member function will crash the program and it will show the guilty code in the debugger.