Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:Lab
09 Understanding C++ pointers
Assume p1, p2, and p3 are pointers to integer numbers. As an example,
consider
int n1 = 33;
int n2 = 11;
int n3 = 22;
You are asked to implement the function
void arrangelnOrder(int* p1, int* p2, int* p3)
The function's goal is to order the data referenced by the pointers in such a
way that after the function is called, p1 points to the smallest and p3 points
to the largest of the three values.
Test your function using the following main() method.
Make sure your app works for all possible combinations of integer values
referenced by the pointers.
int main()
{
int n1 = 33;
int n2 = 11;
int n3 = 22;
cout << "Before the call. n1=" << n1<< ", n2="<< n2 << ", n3=" << n3 << endl;
arrangelnOrder(&n1, &n2, &n3);
cout << "After the call. n1=" << n1 << ", n2=" << n2 << ", n3=" << n3 << endl;
}
It should produce the following output.
Before the call. n1=33, n2=11, n3=22
After the call. n1=11, n2=22, n3=33
NOTE.
Do not copy the data value into an array/vector and then sort them. Such a
solution will be considered unacceptable.
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