C Programming MCQ practice

7 questions. Pick an answer to see whether it’s right, with the explanation.

1. Which of these is NOT a property of an algorithm?

   A FinitenessB DefinitenessC AmbiguityD Effectiveness

2. Which flowchart symbol represents a decision?

   A RectangleB DiamondC ParallelogramD Oval

3. Which of these is a valid C identifier?

   A 2totalB total_2C total-2D int

4. What is the value of 7 / 2 in C when both operands are int?

   A 3.5B 3C 4D 3.0

5. If p is an int pointer, what does *p give?

   A The address of pB The value stored at the address in pC The size of pD The address stored in p

6. Which function allocates memory and sets every byte to zero?

   A malloc()B calloc()C realloc()D free()

7. Which mode opens a file for appending?

   A "r"B "w"C "a"D "x"