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Which symbol is used for single-line comments in C ?

  • A.#
  • B./**/
  • C.//
  • D./

Answer: C

Single-line comments in C use //.

Everything after // up to the end of the line is ignored by the compiler. This style, borrowed from C++, became part of standard C in C99.

/* ... */ marks a multi-line (block) comment, which needs both an opening and a closing mark. # begins a preprocessor directive such as #include, and a single / is the division operator.

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