Consider a pointer to void, named ptr, which has been set to point to a floating point variable g. Which choice is a valid way to dereference ptr to assign its pointed value to a float variable f later in the program?

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float g;
void *ptr=&g;

  • float f=*(float)ptr;
  • float f=(float *)ptr;
  • float f=(float)*ptr;
  • float f=*(float *)ptr;
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