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
Answer:
They are not always right or the most accurate.
Explanation:
Judgments and decisions based on heuristics are simply good enough to satisfy a pressing need in situations of uncertainty, where information is incomplete.
Answer:
- the Keyboard:
The keyboard is a handheld device used to input alphabet, numbers, symbols and characters to a monitor. It also houses the special manipulative and function keys.
- the Control Unit:
The control unit is a component of the CPU which directs the operation of the processor.
- the Printer:
The printer is an external hardware output device which takes electronic data stored on a device and creates a hard copy.
Answer:
is slightly crooked when pressing the pedals. This answer has been confirmed as correct and helpful
Explanation:
Hope it helps
<span>Joel is a victim of a security breech. By leaving his computer unattended and not locked, he allowed for another person to use his credentials to access (or attempt) to access information that would otherwise be restricted to him. The fact that the unauthorized person did not find the information he was seeking does not minimize the risk.</span>
