What is the use of consonant in QBASIC ? Answer me in short and easy answer.
1 answer:
Answer:
See Explanation
Explanation:
I'll assume the question is about the use of constants in QBasic because consonants do not have any special function or usage in QBasic.
In simple terms: In QBasic, constants are used to represent elements that do not change in value during program execution.
Take for instance, you intend to use in your program.
Its value is
So, 3.142 will always be a constant in your program. One of the ways it can be used in a program is:
10 LET PI = 3.142
<em>The above represents a numeric constant. QBasic also have string constants.</em>
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Answer:
Here is the C++ program:
#include <iostream> // to use input output functions
#include <cmath> // to use math functions like sqrt()
#include <iomanip> //to use setprecision method
using namespace std; //to access objects like cin cout
int main () { //start of main function
double speedA; //double type variable to store average speed of car A
double speedB; //double type variable to store average speed of car B
int hour; //int type variable to hold hour part of elapsed time
int minutes; //int type variable to hold minutes part of elapsed time
double shortDistance; // double type variable to store the result of shortest distance between car A and B
double distanceA; //stores the distance of carA
double distanceB; //stores the distance of carB
double mins,hours; //used to convert the elapsed time
cout << "Enter average speed of car A: " << endl; //prompt user to enter the average speed of car A
cin >> speedA; //reads the input value of average speed of car A from user
cout << "Enter average speed of car B: " << endl ; //prompt user to enter the average speed of car B
cin >> speedB; //reads the input value of average speed of car A from user
cout << "Enter elapsed time (in hours and minutes, separated by a space): " << endl; //prompts user to enter elapsed time
cin>> hour >> minutes; //reads elapsed time in hours and minutes
mins = hour * 60; //computes the minutes using value of hour
hours = (minutes+mins)/60; //computes hours using minutes and mins
distanceA = speedA * (hours); // computes distance of car A
distanceB = speedB * (hours); //computes distance of car B
shortDistance =sqrt((distanceA * distanceA) + (distanceB * distanceB)); //computes shortest distance using formula √[(distanceA)² + (distanceB)²)]
cout << "The (shortest) distance between the cars is: "<<fixed<<setprecision(2)<<shortDistance;
//display the resultant value of shortDistance up to 2 decimal places
Explanation:
I will explain the program with an examples:
Let us suppose that the average speeds of cars are:
speedA = 70
speedB = 55
Elapsed time in hours and minutes:
hour = 2
minutes = 30
After taking these input values the program control moves to the statement:
mins = hour * 60;
This becomes
mins = 2 * 60
mins = 120
Next
hours = (minutes+mins)/60;
hours = (30 + 120) / 60
= 150/60
hours = 2.5
Now the next two statements compute distance of the cars:
distanceA = speedA * (hours);
this becomes
distanceA = 70 * (2.5)
distanceA = 175
distanceB = speedB * (hours);
distanceB = 55 * (2.5)
distanceB = 137.5
Next the shortest distance between car A and car B is computed:
shortDistance = sqrt((distanceA * distanceA) + (distanceB * distanceB));
shortDistance = sqrt((175 * 175) + (137.5 * 137.5))
= sqrt(30625 + 18906.25)
= sqrt(49531.25)
= 222.556173
shortDistance = 222.56
Hence the output is:
The (shortest) distance between the cars is: 222.56
