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3 years ago

When you pass an array as an argument to a function, the function can modify the contents of the array?

1 answer:

8 0

In most languages. Primitive data types ( char, int, float, bool, maybe string ) are usually passed by value, but compound data types are passed by reference, so you're not working on a copy but on the original.

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Consider the following two tables where EmployeeNum is primary key in both tables. What is the result of combining the two table

oee [108]

Answer:

The result of combining the both tables is:

Employee(EmployeeNum, LastName, FirstName, WageRate, SocSecNum, DepartmentNum, Street, City, State, PostalCode)

Explanation:

Since the EmployeeNum is the primary and it is available in both tables, what happens is that, it will not list the primary key column twice. It will list the primary key first then all the other attribute in the first table followed by the attribute in the second table. And it will take note so as not to repeat attribute that already occur in the first table.

For instance; in this case, besides EmployeeNum, LastName and FirstName also appear in the both tables but only one instance of them were listed in the resulting table.

4 0

3 years ago

Define binary number and decimal number with example

photoshop1234 [79]

Answer:

The Decimal Number System is a number system for which every real number x can be written in terms of the ten digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 as the sum of powers of 10. A number in the decimal number system is said to be of base 10 and to specify this we attach a subscript 10 to x, written (x)10.

The Binary Number System is a number system for which every real number x can be written in terms of the two digits 0 and 1 as the sum of powers of 2. A number written in the binary number system is said to be of base 2, and to specify this we attach a subscript 2 to x, written (x)2.

4 0

3 years ago

If a packet gets "sucked down a black hole" (figuratively speaking) and is not received by its sender, and no message is sent ba

Serga [27]

Answer:

iso

Explanation:

3 0

2 years ago

What is the function of the command prompt?

yan [13]

The answer is B cause you use it to make commands

6 0

3 years ago

What method of the Math object can be used to return the largest value from the values that are passed to it?

miss Akunina [59]

Answer:

the Math.max() method

Explanation:

The java.lang.* package contains all the essential components needed for a JAVA program which involves numbers and all the operations done on the numericals.

The java.lang.math class contains all the methods needed to perform mathematical operations on numerical values.

All the methods in the question are discussed below with examples.

Math.max() method

java.lang.Math.max(double/ int/ float a, double/ int/ float b)

This method returns the highest value from among the parameters passed to it.

The syntax for the above is

Numbers can be integers, float and double or long. The return type is the same as the parameters.

Two values to be compared are passed as arguments and the higher value of them is returned.

This function also accepts negative integers as parameters.

Math.max(-9, -2);

Gives -2 as the output.

Math.max(0.34, 0.45)

Gives 0.45 as the output.

Math.ceil() method

java.lang.Math.ceil(double/ int/ float a)

This method returns the nearest greater whole number for the given number.

Integer parameter returns an integer number.

Math.ceil(7);

Gives 7 as the output.

Decimal number will return the nearest higher integer.

Math.ceil(8.7);

Gives 9.0 as the output.

Math.ceil(-0.34)

Gives -0 as the output.

Math.pow() method

java.lang.Math.pow(double/ float/ int a, double/ float/ int b)

The above method returns the result of a raise to the power of b.

The first parameter is the base while the second parameter forms the exponent.

Math.pow( 2.3, 4.5 );

This calculates (2.3)^4.5.

Gives 42.44‬ as the output.

Math.pow( 2, 3 );

This calculates the value of 2^3.

Gives 8 as the output.

Math.abs() method

java.lang.Math.abs(double a)

This method returns non-negative value of the numerical parameter passed to it. Absolute of a number does not changes its value but changes the sign of a negative number. It returns the positive or negation of the negative input number.

Math.abs(-0.1234)

Gives 0.1234 as the output.

Math.abs(12.34)

Gives 12.34 as the output.

These methods require java.lang.Math to be imported in the program.

7 0

4 years ago