Answer:
In C++:
#include<iostream>
#include<vector>
using namespace std;
int main() {
int len;
cout<<"Length: "; cin>>len;
string inpt;
vector<string> vect;
for(int i =0;i<len;i++){
cin>>inpt;
vect.push_back(inpt); }
char ch;
cout<<"Input char: "; cin>>ch;
for(int i =0;i<len;i++){
size_t found = vect.at(i).find(ch);
if (found != string::npos){
cout<<vect.at(i)<<" ";
i++;
}
}
return 0;
}
Explanation:
This declares the length of vector as integer
int len;
This prompts the user for length
cout<<"Length: "; cin>>len;
This declares input as string
string inpt;
This declares string vector
vector<string> vect;
The following iteration gets input into the vector
for(int i =0;i<len;i++){
cin>>inpt;
vect.push_back(inpt); }
This declares ch as character
char ch;
This prompts the user for character
cout<<"Input char: "; cin>>ch;
The following iterates through the vector
for(int i =0;i<len;i++){
This checks if vector element contains the character
size_t found = vect.at(i).find(ch);
If found:
if (found != string::npos){
Print out the vector element
cout<<vect.at(i)<<" ";
And move to the next vector element
i++;
}
}
Answer:
B. Computer operating system
Explanation:
the operating system (or OS) manages all of the hardware and software in the computer, and allows hardware and software to communicate.
We can also figure this out by process of elimination: Application software is just a fancy way to say apps, Graphical User Interface (or GUI) are menus that allow a user to use the computer through a visual representation (what you interact with using your mouse), and microcomputer just means a small computer like a laptop or a phone.
Answer:
String date = "21/05/2020";
String dayStr = date.substring(0,2);
int day = Integer.parseInt(dayStr);
System.out.println(day);
Explanation:
Create a variable called <em>date</em> which holds the current date
Create a variable called <em>dayStr</em>. Initialize it to the day part of the <em>date</em> using the substring method
Create a variable called <em>day</em>. Parse the <em>dayStr</em> and assign it to the <em>day</em>
Print the <em>day</em>
The specific part of the report wherein the author would provide his suggestions on the next plans that would be carried out in the study would be the recommendations. In addition, it would open the opportunity to other aspiring researchers to expound and better improve the study.

Data science helps to understand and analyse the actual scenario and help to take fruitful decisions.