Q:

Which of the following definitions, if any, are invalid? Why?

belongs to book: C++ Primer|Stanley B.Lippman, Josee Lajoie, Barbara E.Moo|5th Edition| Chapter number:2| Question number:2.15

KasimKamal

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2022-07-03

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Which of the following definitions, if any, are invalid? Why?

(a) int ival = 1.01;
(b) int &rval1 = 1.01;
(c) int &rval2 = ival;
(d) int &rval3;

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KasimKamal

2022-07-03

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int main() {
  int ival = 1.01;  // OK
  //int &rval1 = 1.01;  // Error: initializer must be `int` object
  int &rval2 = ival;  // OK
  //int &rval3;  // Error: a reference must be initialized when defined

  return 0;
}

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