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3 years ago

The statement x++;

Computers and Technology

1 answer:

natita [175]3 years ago

8 0

Answer:

The correct option for the given question is option(A) i.e Increments the value currently stored in the variable x and stores that new value back in the variable x.

Explanation:

x++ is an increment operator Their are two types of increment operator

1.Post increment

2.Pre increment.

Post increment operator assign the value first to variable then increment the value by 1.

for example

int a=7,t;

t=a++; //post increment

Pre increment operator first increment the value by 1 then store into variable.

int a=7,t;

t=++a; // Pre increment.

So the correct answer is option(a)

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Determine whether or not the following pairs of predicates are unifiable. If they are, give the most-general unifier and show th

Evgen [1.6K]

Answer:

a) P(B,A,B), P(x,y,z)

=> P(B,A,B) , P(B,A,B}

Hence, most general unifier = {x/B , y/A , z/B }.

b. P(x,x), Q(A,A)

No mgu exists for this expression as any substitution will not make P(x,x), Q(A, A) equal as one function is of P and the other is of Q.

c. Older(Father(y),y), Older(Father(x),John)

Thus , mgu ={ y/x , x/John }.

d) Q(G(y,z),G(z,y)), Q(G(x,x),G(A,B))

=> Q(G(x,x),G(x,x)), Q(G(x,x),G(A,B))

This is not unifiable as x cannot be bound for both A and B.

e) P(f(x), x, g(x)), P(f(y), A, z)

=> P(f(A), A, g(A)), P(f(A), A, g(A))

Thus , mgu = {x/y, z/y , y/A }.

Explanation:

Unification: Any substitution that makes two expressions equal is called a unifier.

a) P(B,A,B), P(x,y,z)

Use { x/B}

=> P(B,A,B) , P(B,y,z)

Now use {y/A}

=> P(B,A,B) , P(B,A,z)

Now, use {z/B}

=> P(B,A,B) , P(B,A,B}

Hence, most general unifier = {x/B , y/A , z/B }

b. P(x,x), Q(A,A)

No mgu exists for this expression as any substitution will not make P(x,x), Q(A, A) equal as one function is of P and the other is of Q

c. Older(Father(y),y), Older(Father(x),John)

Use {y/x}

=> Older(Father(x),x), Older(Father(x),John)

Now use { x/John }

=> Older(Father(John), John), Older(Father(John), John)

Thus , mgu ={ y/x , x/John }

d) Q(G(y,z),G(z,y)), Q(G(x,x),G(A,B))

Use { y/x }

=> Q(G(x,z),G(z,x)), Q(G(x,x),G(A,B))

Use {z/x}

=> Q(G(x,x),G(x,x)), Q(G(x,x),G(A,B))

This is not unifiable as x cannot be bound for both A and B

e) P(f(x), x, g(x)), P(f(y), A, z)

Use {x/y}

=> P(f(y), y, g(y)), P(f(y), A, z)

Now use {z/g(y)}

P(f(y), y, g(y)), P(f(y), A, g(y))

Now use {y/A}

=> P(f(A), A, g(A)), P(f(A), A, g(A))

Thus , mgu = {x/y, z/y , y/A }.

7 0

3 years ago

Jim has just purchased two new SCSI hard disk drives and a controller card for them. He properly installs the hardware in his ma

yawa3891 [41]

Answer:

Create partitions on each hard disk drives.
Mount the partition created on each hard drive so they are accessible by the the operating system.
Format the partitions created with a filesystem recognized by Linux.

Explanation:

Having purchased the two new SCSI hard disk drives with the controller cards for each and installed them properly, before using them for data storage and retrieval he must first use the fdisk command to create one or more partitions on each of the hard disk drives then mount any partitions created on the two hard drives so that they are accessible by the operating system before then proceeding to format any partitions created with a valid filesystem recognized by Linux.

4 0

3 years ago

Help me if you do then you get 10 points and brainliest

stellarik [79]

The answer is A. The earth was formed 4.54 years ago, and during those first serveral hundred million years, oceans, continents started to form.

A) Precambrian time.

3 0

3 years ago

In 1964 in London, Ontario one could buy a chili-dog and a root beer for $1.25, today the same chili dog and root beer cost $5.0

Marta_Voda [28]

Answer:

3% inflation rise. No correct cpi option

Explanation:

Consumer Price Index(CPI) is calculated by the Bureau of Economic Analysis and Statistics of a country monthly and annually.

Consumer Price Index(CPI) is used for measuring the changes in the price level of consumer goods and services purchased by households.

Calculating the consumer price index; price in 1964= $1.25, today price= $5.0.

Therefore, consumer price index= Price in today- price in 1964÷ price in 1964,.

Consumer Price index(CPI)= $(5-1.25)/1.25 = 3.75/1.25 = 3 Percent price inflation rise.

For the first cpi; 112-80/80= 0.4 percent( not equal to the 3 Percent inflation rise).

For the second cpi: 141.6-60/60= 1.36 Percent inflation rise(not equal to the 3 Percent inflation rise).

For the third CPI: 126.4-75/75 =0.68 percent inflation rise[not equal to the 3 Percent inflation rise].

For the third CPI: 108.5-90/90=0.21 percent inflation rise(not equal to 3 Percent inflation rise)

Therefore, none of the options are right.

5 0

3 years ago

A Uniform Resource Locator (URL) is a formatted string of text that web browsers, email applications, and other software program

Fiesta28 [93]

The purpose of a URL is to help users get to websites easier. A URL (Uniform resource locator) is that tab at the top of your web browser that you type into. Like if you want to go to google, you would type in Google.com. So the answer is true.

6 0

3 years ago

Read 2 more answers