Recitation 9 November 6 2006 F06 15 213 Introduction to Computer Systems Donnie Kim Bryant O Hallaron Pointer Arithmetic pointer dereferencing This problem tests your understanding of casting and pointer de referencing Consider the following code being executed on a Little Endian Pentium 32 bit machine where sizeof char sizeof short sizeof int sizeof int 1 2 4 4 The size of any pointer e g char is 4 bytes For each of the following assignment statements fill in the blanks in the comments to indicate the result of the assignment All answers must be in hex int main int array 3 int ptr int x array 0 0xaabbccdd array 1 0x55667788 array 2 0x11223344 ptr array x int int ptr 1 x 0x x int char ptr 1 x 0x x int char ptr 1 x 0x x int long ptr 1 x 0x x int short ptr 1 x 0x 1 Recitation 9 November 6 2006 F06 15 213 Introduction to Computer Systems Donnie Kim Bryant O Hallaron Now consider the following code being executed on a Little Endian Pentium 64 bit machine where sizeof char sizeof short sizeof int sizeof int 1 2 4 8 The size of any pointer e g char is 8 bytes For each of the following assignment statements fill in the blanks in the comments to indicate the result of the assignment All answers must be in hex int main int array 2 int ptr int x array 0 0xaabbccdd array 1 0x55667788 array 2 0x11223344 ptr array x int int ptr 1 x 0x x int char ptr 1 x 0x x int char ptr 1 x 0x x int long ptr 1 x 0x x int short ptr 1 x 0x 2
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