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

8 0

4 years ago

What is installing?

Bess [88]

Answer:

The process of putting a new software on a computer.

Explanation:

Installing is the process of putting a new software on a computer.

Updating is process of replacing an older version of software with a newer version.

3 0

2 years ago

An exclusion contract A. gives a firm the right to be the exclusive provider of a good in a particular market. B. is a form of e

irina1246 [14]

Answer:

D. All of the above

7 0

3 years ago

Use set builder notation to describe these sets.

statuscvo [17]

Answer:

a) S1 = { 2^x | x belongs to the set of Whole Numbers}

b) S2 = { 2+3(x-1) | x belongs to Natural Numbers }

c) S3 = { x^2 | x belongs to the set of Natural Numbers }

d) S4 = { x | x belongs to English Alphabet }

e) S5 = { x | x is a Vowel of English Alphabet}

Explanation:

Whole Numbers = {0, 1, 2, 3, ...}

Natural Numbers = {1, 2, 3, ...}

English Alphabet={a, b, c, d, e, ... , x, y, z }

Vowels of English Alphabet = {a, e, i, o, u}

8 0

3 years ago