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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...

 int main(){
   ... 

»  int n1, n2;

»  printf("Sizes?\n");
»  scanf("%d %d", &n1, &n2);

»  float ( *pvar)[n2];
»  pvar=malloc(n1*sizeof *pvar);

»  pvar[0]1=1;

»  return 0;

}
Memory

Allocated memory

128
129
130
131
132
133
134
135
128[0][0] = -0.0255355
128[0][1] = 3.90623e+30
136
137
138
139
140
141
142
143
128[0][2] = -7.11077e+33
128[0][3] = -7.0646e-26
144
145
146
147
148
149
150
151
128[1][0] = -1.04379e-26
128[1][1] = 1.07745e-24
152
153
154
155
156
157
158
159
128[1][2] = -1.9224e-32
128[1][3] = 1.32888e-18
160
161
162
163
164
165
166
167
128[2][0] = 1.71254e+09
128[2][1] = 8.77198e-21
168
169
170
171
172
173
174
175
128[2][2] = 2.4098e+32
128[2][3] = 1.73996e-38

main()

308
309
310
311
n1 = 200
312
313
314
315
316
317
318
319
n2 = -144977081
pvar = -136847400

NB: the actual memory address of each variable is the
address shown plus 4288229416 (0xFF993028).

The actual address of allocated memory is the
address shown plus 139031144 (0x8497268).

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.

Input was:

3 4

Show output (Before looking at the output, work out what you think it put should be and see if you are right.)

Output

Sizes?
                                                                                                                                                                                                                                                                       
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