Yes, horizontal rows are periods. “All of the elements in a
period have a similar number of atomic orbitals. Each element in the top row
(the principal time frame) has one orbital for its electrons. The greater part
of the components in the second column (the second time frame) has two orbitals
for their electrons. It goes down the occasional table that way. As of now, the
most extreme number of electron orbitals or electron shells for any element is
seven."<span>
<span>The vertical columns are groups. "The elements in a
group have the same number of electrons in their outer orbital [and thus the
same charge]. Every element in the first column (bunch one) has one electron in
its external shell. Each element on the second segment (assemble two) has two
electrons in the external shell. As you continue tallying the segments, you'll
know what numbers of electrons are in the external shell.</span></span>
Answer:
An interpreter is quite different from a complier due to the following statement below:
O. An interpreter translates and executes code line by line, while a compiler translates all code at once so that it is ready to be executed at any time.
Explanation:
For an interpreter, it works in translating and execution of the codes line after another line. In a situation where there is a mistake in the code, the next line would not be able to be executed, but rather display error message. On the other hand, compiler translate all codes at once and execute them as a single work.
<em>During its translation of the codes in compiler, should there be any error, it would not be able to execute despite the fact that, the error might be in the last line of the code.</em>
Answer:
#include <iostream>
#include <string>
#include <regex>
using namespace std;
int main()
{
cout << "Enter a 5-digit number: ";
string number;
cin >> number;
bool valid = regex_search(number, regex("^\\d{4}[02468]$"));
if (valid) {
valid = stoi(number.substr(0, 1)) + stoi(number.substr(1, 1))
< stoi(number.substr(3, 1)) + stoi(number.substr(4, 1));
}
cout << number << (valid ? " is valid" : " is invalid");
}
Explanation:
Regular expressions can do all of your checking except for the sum of digits check. The checks are i.m.o. easiest if you don't treat the input as a number, but as a string with digits in it.
The regex means:
^ start of string
\d{4} exactly 4 digits
[02468] one of 0, 2, 4, 6 or 8 (this is what makes it even)
$ end of string
