Question

Given the following program, trace the output by drawing the memory model as the program runs. Assuming each cell is one byte memory.

#include <iostream>

using namespace std;

int main( ) {

int *p;

int val[3] = {1, 2, 3}; // array

p = &val[0];

cout << p << " " << &val[0] << endl;

for ( int i = 0 ; i <3 ; i++ ) {

cout << "val[" << i << "]: value is " << *(p+i) << " and address is " << p+i << endl;

}

system("PAUSE");

return 0;

}

output 0031FED0 0031FED0 val[0]:

value is 1 and address is 0031FED0

val[1]: value is 2 and address is 0031FED4 val[2]:

value is 3 and address is 0031FED8

Press any key to continue . . .

Answer 1

val[0] = 1	val[1] = 2	val[2] = 3
0031FED0(4 bytes for int)	0031FED4	0031FED8

^

p = 0031FED0

Do ask if any doubt.