Answer:
// Program is written in C++ Programming Language
// Comments are used for explanatory purpose
// Program starts here
#include<iostream>
using namespace std;
int main ()
{
// Declare Variable
int selection;
// Prompt user to make a selection of medium between air, water or steel.
cout<<"Make Selection"<<'\n'<<"Press 1 for Air"<<'\n'<<"Press 2 for Water"<<'\n'<<"Press 3 for Steel";
cin>>selection;
// Check for entry
if(selection == 1) {
cout<<"You selected Air"<<'\n';
cout<<"The distance travelled by sound wave in air is 1,125 feet in 1 second";
}
else if(selection == 2) {
cout<<"You selected Water"<<'\n';
cout<<"The distance travelled by sound wave in water is 4859 feet in 1 second";
}
else if(selection == 3) {
cout<<"You selected Steel"<<'\n';
cout<<"The distance travelled by sound wave in steel is 19554 feet in 1 second";
}
else
cout<<"Invalid Selection";
return 0;
}
Answer:
XML (Extensible Markup Language):
Explanation:
XML (Xtensible Markup Language):
It is a markup language that is used for creating web-pages, it defines a set of rules that makes it readable both to humans and machine.
XML was primarily designed to be a software and hardware independent tool and it's focus was on data. XML provides a framework for defining markup languages.
XML, HTML and XHTML are all related to each other because they are all markup languages and can be used to build websites.
Basically,
-HTML is primarily for web-pages.
-XML is primarily for data.
-XHTML is a standard based on HTML that follows the strict rules of XML.
Answer:
It is a condition where the eye isn't completely round
Explanation:
#include <iostream>
#include <vector>
using namespace std;
class Student
{
public:
Student(int mark)
{
this->mark = mark;
if (mark >= 90 && mark <= 100)
grade = 'A';
else if (mark >= 80 && mark <= 89)
grade = 'B';
else if (mark >= 70 && mark <= 79)
grade = 'C';
else if (mark < 70 && mark >= 0)
grade = 'D';
else
cout << "Invalid mark, grade not assigned";
}
int getMark()
{
return mark;
}
char getGrade()
{
return grade;
}
private:
int mark;
char grade;
};
int main()
{
vector<Student> students;
int num, mark;
cout << "Enter number of students: ";
cin >> num;
if (num <= 0)
cout << "Invalid number of students, exiting";
else
{
for (int i = 1; i <= num; i++)
{
cout << "Enter marks for student " << i << ": ";
cin >> mark;
Student s(mark);
students.push_back(s);
}
}
// do whatever you like with the vector from here onwards, such as:
/*
for (int i = 0; i < students.size(); i++)
{
cout << "Student " << i + 1 << " grade: " << students[i].getGrade() << endl;
}
*/
return 0;
}
