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  Value and type of last evaluated expression: Address of array element: Address of array elementx:  (none)

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Code

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// Return the square root of the argument or minus one if it is negative

 double sqrtOrMinusOne(double x){
»  if (x>=0) 
    return sqrt(x);
  
»  printf("Warning: %g is negative\n", x);
»  return -1;
}
 ...

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