Q:
What is the difference between an uninitialized pointer and a null pointer?
belongs to collection: Embedded C interview questions and answers (2022)
Embedded C interview questions and answers (2022)
- What is the difference between C and embedded C?
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C programming
Answer:
An uninitialized pointer is a pointer that points unknown memory location. The behavior of the uninitialized pointer is undefined. If you try to dereference the uninitialized pointer code behavior will undefine.
According to C standard, an integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant. The behavior of the uninitialized pointer is defined. When you try to dereference the null pointer then your code will crash.
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