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Explain the following code:  #include   using namespace std;    int sum(int(*) (int), int);   int square(int);   int cube(int);    int main()  {      cout << sum(square, 4) << endl;      cout << sum(cube, 4) << endl;  system("pause");  }      int sum(int(*pf) (int k), int n)  {    int s = 0;  for (int i = 1; i <= n; i++)  s = s + (*pf) (i);  return s;  }  int square(int k)  {  return k*k;  }    int cube(int k)  {  return k*k*k;  }

Explain the following code:  #include   using namespace std;    int sum(int(*) (int), int);   int square(int);   int cube(int);    int main()  {      cout << sum(square, 4) << endl;      cout << sum(cube, 4) << endl;  system("pause");  }      int sum(int(*pf) (int k), int n)  {    int s = 0;  for (int i = 1; i <= n; i++)  s = s + (*pf) (i);  return s;  }  int square(int k)  {  return k*k;  }    int cube(int k)  {  return k*k*k;  }

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question

) Explain the following code: 

#include <iostream> 

using namespace std; 

 

int sum(int(*) (int), int);  

int square(int);  

int cube(int); 

 

int main() 

{ 

 

 

cout << sum(square, 4) << endl; 

 

 

cout << sum(cube, 4) << endl; 

system("pause"); 

} 

 

 

int sum(int(*pf) (int k), int n) 

{ 

 

int s = 0; 

for (int i = 1; i <= n; i++) 

s = s + (*pf) (i); 

return s; 

} 

int square(int k) 

{ 

return k*k; 

} 

 

int cube(int k) 

{ 

return k*k*k; 

} 

 

 

Results: 

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