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Evaluate C for-loop execution count

BitkernelSoftware Engineer · Online Assessment
MediumSoftware EngineerOnline AssessmentSoftware Engineering Fundamentals

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This question evaluates understanding of C expression evaluation and control-flow semantics, focusing on how assignment expressions interact with loop conditions and variable updates.

In C, variables m and n are both of type int. Consider the following code:

int m, n;
for (m = 0, n = -1; n = 0; m++, n++)
 n++;

In standard C semantics (where = is assignment, not comparison), how many times does the loop body (n++ inside the loop) execute?

Options:

  • A. The loop body executes 0 times
  • B. The loop body executes 1 time
  • C. The loop is infinite
  • D. There is a runtime error