Google Interview Question: There seems bug in a source code. When you put commands to print something, the bug disappears. Why does it happen?

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There seems bug in a source code. When you put commands to print something, the bug disappears. Why does it happen?

Anonymous

Feb 22, 2015

This particular (buggy) system seems very sensitive to processing/executing time. So if you add more job to perform, then the bug "disappears".