Multi-dimensional Array

Question

Can anyone please verify whether I have calculated the addresses correctly or not?
 

 

Comments

first write how your elements look like in memory...

then verify your answers... I hope you did wrong..

 

your elements in memory look like as ( for better understanding take one more 2D array )

 

000 010 020 100 110 120 *** 200 210 220

 

001 011 021 101 111 121 *** 201 211 221

 

002 012 022 102 112 122 *** 202 212 222

 

003 013 023 103 113 123 *** 203 213 223

 

and now give the addresses.. 000 get 100, 010 get 104....

Answer 1

let array for column major order is a[layers][columns][rows]

base address is 100  and size of each element is 4 bytes

number of layers=-28-(-29)+1=2

number of columns -25-(-27)+1=3

number of rows=-21-(-24)+1=4

a-1=100-4*3*4=100-48=52

&a-1=100-4*4*3*2=100-96=4

a+2=100+2*(4*3*4)=100+96=196

&a+2=100+2*(4*2*3*4)=100+192=292

*a+3=100+3*(4*4)=100+48=148

&(*a)+3=a+3=100+3*(4*3*4)=100+144=244

*(*a)+3=100+3*4=100+12=112

*(a+3)+2=*(100+3*(4*3*4))+2=*(144)+2=144+4*2*4=144+32=176

**a+1=100+4*1=100+4=104

&(**a)+2=*a+2=100+4*2*4=100+32=132

&(***a)+3=**a+3=100+3*4=100+112

Comments

&(**a)+2= 136?

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*(a+3)+2=268?