Program 8-4

posted Apr 10, 2013, 12:51 AM by Karwan Jacksi   [ updated Apr 10, 2013, 12:51 AM ]
Program 8-4
1 // This program unsafely stores values beyond an array's boundary.
2 // What happens depends on how your computer manages memory.
3 // It MAY overwrite other memory variables. It MAY crash your computer.
4 #include <iostream>
5 using namespace std;
6
7 int main()
8 {
9 const int SIZE = 3;
10 int A[SIZE] = {1, 1, 1}; // Define A as a 3-element int array
11 // holding the values 1, 1, 1
12 int B[SIZE]; // Define B as another 3-element int array
13
14 // Here is what is stored in array A
15 cout << "Here are the original numbers in 3-element array A: ";
16 for (int count = 0; count < 3; count++)
17 cout << A[count] << " ";
18
19 // Attempt to store seven numbers in the 3-element array
20 cout << "\n\nNow I'm storing 7 numbers in 3-element array B.";
21 for (int count = 0; count < 7; count++)
22 B[count] = 5;
23
24 // If the program is still running, display the numbers
25 cout << "\nIf you see this message, the computer did not crash.";
26 cout << "\n\nHere are the 7 numbers in array B : ";
27 for (int count = 0; count < 7; count++)
28 cout << B[count] << " ";
29
30 cout << "\nHere are the numbers now in array A: ";
31 for (int count = 0; count < 3; count++)
32 cout << A[count] << " ";
33
34 return 0;
35 }

Program Output
Here are the original numbers in 3-element array A: 1 1 1
Now I'm storing 7 numbers in 3-element array B.
If you see this message, the computer did not crash.
Here are the 7 numbers in array B : 5 5 5 5 5 5 5
Here are the numbers now in array A: 5 5 5
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