everest% cc malloc4.c
everest% 

everest% a.out
size of array = ? 3
Array pointed by ptr1:
  0   1   4 

everest% 

everest% a.out
size of array = ? 4
Array pointed by ptr1:
  0   1   4   9 

everest% 

everest% a.out
size of array = ? 17
Array pointed by ptr1:
  0   1   4   9  16  25  36  49  64  81 100 121 144 169 196 225 256 

everest% 

everest% 
aeverest% .out
size of array = ? 8888888888
malloc() failed!
everest%