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C/C++ Source or Header  |  2000-05-25  |  380 b   |  14 lines
  1. //: C03:CastFromVoidPointer.cpp
  2. // From Thinking in C++, 2nd Edition
  3. // Available at http://www.BruceEckel.com
  4. // (c) Bruce Eckel 1999
  5. // Copyright notice in Copyright.txt
  6. int main() {
  7.   int i = 99;
  8.   void* vp = &i;
  9.   // Can't dereference a void pointer:
  10.   // *vp = 3; // Compile-time error
  11.   // Must cast back to int before dereferencing:
  12.   *((int*)vp) = 3;
  13. } ///:~
  14.