Computers and Technology, 03.03.2020 22:55 kelseatuttleni

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Compare and contrast if-else and elif statements. Give examples.
What are the relational operators? How are they used?

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Answer from: PresleyPie2700

a. Comparison of if-else and elif:

if else follow as:

If (Condition)

{

In case if condition true, expression in this section executes

}

else

{

In case condition is false, expression in this section executes

}

elif Statement follows as:

If (Condition)

{

In case if condition true, expression in this section executes

}

{

in case, condition is false, move to elif block

elif (Condition)

{

In case elif condition true, expression in this section executes

}

else

{

In case elif condition is false, expression in this section executes

}

Explanation:

In if else, program first check the condition in "if statement", if condition is true it move into the body of "if " and execute the expression. If the condition is false it moves to the body of "else" and execute the expression.

elif is another block of condition in If else condition,It works as in "if statement" if the condition is true the program executes the expression of body of "if body". If the condition is false, it moves to another block of "elif", where it again check some other condition found in "elif statement". If the condition of "elif statement" is true it executes the expression of "elif body" otherwise in case of false condition it execute the expression in "else body".

It follows as: if - elif-else

Answer

b. the relational operators

Relation operators are the operators that are need in the expression to establish relationship between different operands of the expression.

Explanation:

In few expressions, their are some operators used to establish or show the relationship between different operands. These operator could be Equal (=), Greater than(>), Less than (<), Greater than equal to (>=) and Less than Equal to (<=).

These operators can be used in conditional statements that are used to check the relationship between operands and values through these operators.

Example

if (a>5)

{

if value of is greater than 5 then body of if will execute.

}

else

{

If value of a is less or equal to 5, this section will execute.

}

Answer from: Quest

Work with a monitor that’s calibrated and profiled. for critical image editing, calibration and profiling are essential. otherwise, the image you see on your monitor looks different on other monitors or when printed.plan to use adjustment layers to adjust the tonal range and color balance of your image. adjustment layers let you go back and make successive tonal adjustments without discarding or permanently modifying data from the image layer. keep in mind that using adjustment layers adds to the file size of the image and demands more ram from your computer. accessing the color and tonal commands in the adjustments panel automatically creates adjustment layers.if you don’t want to use adjustment layers, you can apply adjustments directly to an image layer. remember that some image information is discarded, when making a color or tonal adjustment directly to an image layer.for critical work and maximum preservation of image data, it’s best if the image you work with is 16 bits per channel (16‑bit image) rather than 8 bits per channel (8‑bit image). data is discarded when you make tonal and color adjustments. the loss of image information is more critical in an 8‑bit image than a 16‑bit image. generally, 16‑bit images have a larger file size than 8‑bit images.duplicate or make a copy of the image file. working on a copy of your image preserves the original in the event you want to use the image in its original state.remove any flaws such as dust spots, blemishes, and scratches from the image before making color and tonal adjustments.open the info or histogram panel in expanded view. as you evaluate and correct the image, both panels display invaluable feedback on your adjustments.you can make a selection or use a mask to confine your color and tonal adjustments to part of an image. another way to apply color and tonal adjustments selectively is to set up your document with image components on different layers. color and tonal adjustments are applied to only one layer at a time. only the image components on the targeted layer are affected.

Answer from: Quest

something will pop up that says “know the answer? answer now! ” and you click on it and write your answer. after you are done, submit it.

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