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3 years ago

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Given two variables , first_place_winner and second_place_winner, write some code that swaps their associated values. use any ad

ditional variables as necessary.

Computers and Technology

1 answer:

otez555 [7]3 years ago

4 0

Int a, b;

a=20

b=40

a=a+b

b=a-b

a=a-b

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What does the following Boolean operators do?<br>AND function<br>OR function<br>NOT function

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Hdehehdbendjdhwjsjsjjs

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3 years ago

The difference between a for loop and a while loop is that a for loop is a loop that happens for a certain number of times. A wh

Shalnov [3]

For loop, if you have to fill water in a bucket three times, It will fill water in a bucket three times. While loop, If you have to take water from the well multiple times but stop when the water is empty in the well.

Explanation:

For loop is used mostly static way of programming.
While loop is used for dynamic approach of programming.
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3 years ago

If all of Earth's history were squeezed into one 12-hour period, how long ago did Precambrian time end? How long did the Cenozoi

Jet001 [13]

Answer:

That it

Explanation:

There have been mass extinctions during the Cenozoic as there were during the Mesozoic and Paleozoic, but not as many animals and plants have disappeared. Finally, humanity appeared during the last two million years.The human lineage only diverged from our most recent common ancestor about 5 million years ago; less than half of 1% of that time, and modern Homo sapiens is only between 200,000 and 50,000 years old, depending on your definition.

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3 years ago

3. Find the product of (a² +3a+5) x (a+7)

sergij07 [2.7K]

Explanation:

(a^2 + 3a +5) × (a + 7)

= a^3 + 7a^2 + 3a^2 + 21a + 5a + 35

= a^3 + 10a^2 + 26a + 35

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4 years ago

) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message

emmainna [20.7K]

Answer:

In Python:

entry = input("Sentence: ")

while True:

if entry.count(",") == 0:

print("Error: No comma in string")

entry = input("Sentence: ")

elif entry.count(",") > 1:

print("Error: Too many comma in input")

entry = input("Sentence: ")

else:

ind = entry.index(',')+1

if entry[ind].isnumeric() == False:

print("Comma not followed by an integer")

entry = input("Sentence: ")

else:

break

print("Valid Input")

Explanation:

This prompts the user for a sentence

entry = input("Sentence: ")

The following loop is repeated until the user enters a valid entry

while True:

This is executed if the number of commas is 0

<em> if entry.count(",") == 0:</em>

<em> print("Error: No comma in string")</em>

<em> entry = input("Sentence: ")</em>

This is executed if the number of commas is more than 1

<em> elif entry.count(",") > 1:</em>

<em> print("Error: Too many comma in input")</em>

<em> entry = input("Sentence: ")</em>

This is executed if the number of commas is 1

else:

This calculates the next index after the comma

ind = entry.index(',')+1

This checks if the character after the comma is a number

if entry[ind].isnumeric() == False:

If it is not a number, the print statement is executed

<em> print("Comma not followed by an integer")</em>

<em> entry = input("Sentence: ")</em>

If otherwise, the loop is exited

<em> else:</em>

<em> break</em>

This prints valid input, when the user enters a valid string

print("Valid Input")

Note that: entry = input("Sentence: ") <em>is used to get input</em>

4 0

3 years ago