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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

 Header...

// 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;

}
 int main(){
   ... 

»  double a, b;

»  a=sqrtOrMinusOne(9.0);
»  b=sqrtOrMinusOne(-3);

»  printf("x: %g y: %g\n", a, b);

»  return -1;

}

Data

sqrtOrMinusOne()

x (double)
128
9

sqrtOrMinusOne()

x (double)
128
-3

main()

a (double)   b (double)
192   200
-9.21503234e+266
  
4.93593587e-270

Memory

sqrtOrMinusOne()

128
129
130
131
132
133
134
135
x = 9

sqrtOrMinusOne()

128
129
130
131
132
133
134
135
x = -3

main()

192
193
194
195
196
197
198
199
a = -9.21503234e+266
200
201
202
203
204
205
206
207
b = 4.93593587e-270

NB: the actual memory address of each variable is the
address shown plus 4290841288 (0xFFC10AC8).

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Output

Warning: -3 is negative
x: 3 y: -1
                                                                                                                                                                                                                                                                       
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