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Discussion :: Memory Allocation

  1. How many bytes of memory will the following code reserve?

     #include
 #include 

 int main()
 {
     int *p;  
     p = (int *)malloc(256 * 256);  
     if(p == NULL)       
          printf("Allocation failed");  
    return 0; 
}

    2. A.

    65536
    B.

    Allocation failed
    C.

    Error
    D.

    No output

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    Answer : Option B

    Explanation :

    Hence 256*256 = 65536 is passed to malloc() function which can allocate upto 65535. So the memory allocation will be failed in 16 bit platform (Turbo C in DOS).

    If you compile the same program in 32 bit platform like Linux (GCC Compiler) it may allocate the required memory.

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