Answer: The difference between call by value and call by reference is that in call by value the actual parameters are passed into the function as arguments whereas in call by reference the address of the variables are sent as parameters.
Explanation:
Some examples are:
call by value
#include <stdio.h>
void swap(int, int);
int main()
{ int a = 10, b= 20;
swap(a, b);
printf("a: %d, b: %d\n", a, b);
}
void swap(int c, int d)
{
int t;
t = c; c = d; d = t;
}
OUTPUT
a: 10, b: 20
The value of a and b remain unchanged as the values are local
//call by reference
#include <stdio.h>
void swap(int*, int*);
int main()
{
int a = 10, b = 20;
swap(&a, &b); //passing the address
printf("a: %d, b: %d\n", a, b);
}
void swap(int *c, int *d)
{
int t;
t = *c; *c = *d; *d = t;
}
OUTPUT
a: 20, b: 10
due to dereferencing by the pointer the value can be changed which is call by reference
You should probably retry answering it. Or two people are already answering it.
-Edge
Answer:
Cyber security can be used for good but nevertheless some people will find ways to do bad things. Basically the negative impacts of cyber security is the opposite to the good type of cyber security they take advantage of it and exploit computer system to do what they want. An example to this is planting a malware on the victim's computer or using a DDOS attack on a WiFi router the possibility are endless.
Client server network as it has a powerful server which provides all the networks required on the network. Files are usually backed up regularly.
Solution:
When a customer makes a request or complaint, the goal of customer service is to show the customer how to remain calm and courteous.
Because the work of the costumer care is to serve as customers' first point of contact for complaints, questions, requests, feedback, or any other needs; these professionals are essentially charged with managing relationships between clients and the company.
Thus the required answer is D
