A Dangling Pointer Is a Pointer

question 61

Multiple Choice

A dangling pointer is a pointer

• A) to a block of memory that has been deleted.
• B) that has been declared, but has not yet been assigned a value.
• C) that has not been initialized.
• D) that has been assigned the value of null or null_ptr.
• E) None of the above

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Definitions:

Hydrogen Ion Concentration

A measure of the acidity or alkalinity of a solution, often expressed in terms of pH.

pH

A measurement system designed to indicate the level of acidity or alkalinity in water-based solutions, ranging from 0 (highly acidic) to 14 (highly alkaline), with the midpoint, 7, representing a neutral pH.

Buffer

A solution that resists changes in pH when acid or alkali is added to it.

Ionic Substance

A chemical compound composed of ions held together by electrostatic forces termed ionic bonding, typically formed when a metal reacts with a nonmetal.