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Try stepping through the code


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

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Code

 Header...

#define N 10

 int main(){
»  float *p=NULL;

»  p=malloc(N*sizeof *p);
»  if (p==NULL) {
»    fprintf(stderr, "Out of memory!\n");
»    exit(1);
  }

»  for ( int i=0;i<N; ++i) 
    pi=sqrt(i);
  // Use p for something

»  return 0;
}
 ...
Memory

Allocated memory

128
129
130
131
132
133
134
135
128[0] = 2.99462e+27
128[1] = 5.49411e+09
136
137
138
139
140
141
142
143
128[2] = -9.78801e+37
128[3] = -5.96209e-27
144
145
146
147
148
149
150
151
128[4] = 0.00025401
128[5] = -3.75646e-06
152
153
154
155
156
157
158
159
128[6] = 3.04637e+17
128[7] = 2.6028e+26
160
161
162
163
164
165
166
167
128[8] = -4.35772e+18
128[9] = -7.70096e-37

main()

300
301
302
303
p = NULL

main(): for()

304
305
306
307
i = 0

NB: the actual memory address of each variable is the
address shown plus 4292813672 (0xFFDF2368).

The actual address of allocated memory is the
address shown plus 139776240 (0x854D0F0).

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