Answer
The volatile keyword tells the compiler that a variable may be modified by multiple threads.
It prevents certain optimizations and ensures every read returns the most recent value.
Quick Answer
volatile tells the compiler and CPU not to cache a variable — always read it fresh from memory. Without it, the CPU might cache a value in a register and miss updates from another thread. Use for simple shared flags. For anything complex, use lock or Interlocked instead.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ