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Elena L [17]
3 years ago
12

What is the importance of data validation, and how can user data entry errors be reduced or eliminated?

Computers and Technology
1 answer:
lisabon 2012 [21]3 years ago
5 0

Incorrect data can lead to unexpected program execution results. Data entry errors can be reduced by only accepting valid input, e.g., if a number must be entered, alphabetic characters are ignored. After data validation, error messages can be prompted to the user, requiring him to enter the data again.

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When internet techonology was developed in the 1970s by the department of defense?
Scorpion4ik [409]
TRUE. The internet began as a military infrastructure project for communication purposes.  
3 0
3 years ago
What do workspaces allow a company to do?
erica [24]

Answer:

The answer to this question is given below in the explanation section. The correct answer is A.

Explanation:

The correct answer to this question is:

They restrict access depending on job role.

because the company creates different workspaces for particular departments. Each department allows access to its employee to work and use the assigned resources. Other people from other departments can't use their computers due to security reasons.

However, the following options are not correct.

They connect a company's website with its internal wiki.

They allow a company to organize information. (information is maintained inside in the workspace)

They provide a platform for collaboration.

8 0
3 years ago
The amount of white space or vertical space between the lines of the text in a paragraph is called line spacing.
jekas [21]

Answer:

It is a true statement .

3 0
2 years ago
Taking a suitable example in c language explain the of call by value and call by reference concepts.
Degger [83]

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
3 years ago
Assume the variable myWord references a string. Write a statement that uses a slicing
givi [52]

Answer:

"myWord[-5:]"

Explanation:

So whenever you slice a string, the syntax in python is expressed as:

string[a:b:c]

where a=start index (this is included in the sliced string)

b = end index (this is excluded from the sliced string)

c = increment

If any of these are included, they are set to default values, where a=0, b=len(string), and c=1.

The increment isn't necessary here, and it's just so you know the syntax a bit more

Anyways, I'm assuming when the question asks to display "the last 5 characters in the string" it means in order? e.g "abcdefghijk" -> "ghijk" and not "abcdefghijk" -> "kjihg"

The last piece of information to know is what a negative index represents.

For example if I have the piece of code

"

string = "hello world"

print(string[-1])

"

This will output "d", and the negative 1 represents the last letter. If you did -2, it would output the 2nd to last letter and so on.

So to print the last 5 characters, we simply use the -5 as the starting index.  

"

string = "hello world"

print(string[-5:])

"

This will print "world" or in other words, the last 5 letters. The reason for this is because the -5 in the first spot means the starting index is the 5th to last letter, and when you have the : after the -5, this is the way of telling python you're slicing the string, and not indexing 1 character. You don't need to include another value after that, because it will default to the last index of the string, or more specifically the last index + 1, since the last index is still included.

So the last thing to know, is that if the string isn't greater than 5 characters, it just prints the entire string, and no errors are raised. You can test this out your self as well. So whenever you have a string that's less than 5 characters the entire string is outputted.

3 0
1 year ago
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