Question

PROGRAM IN C++

The distance a vehicle travels can be calculated using the following equation: distance = speed * time

For example, if a train travels 40 miles per hour for 3 hours, the distance traveled is 120 miles. Write a program that asks the user for the speed of a vehicle (in miles per hour) and how many hours it has traveled. The program should then use a loop to display the distance the vehicle has traveled for each hour of that time.

Sample Output: What is the speed of the vehicle in mph? 40 For how many hours has it traveled? 3 Hour Distance Traveled in Miles

----------------------------------

1 40

2 80

3 120

Input Validation:

Do not accept a negative number for speed and do not accept any value less than 1 for time traveled. Try to validate using loops.

Answer 1

C++ code:

#include <iostream>
using namespace std;
int main()
{
    //initializing hour and mph
    int hour,mph;
    //asking for speed
    cout<<"What is the speed of the vehicle in mph? ";
    //accepting it
    cin>>mph;
    //looping till a a non negative number is entered
    while(mph<0){
        //asking to enter a non negative number
        cout<<"Please enter a non negative number"<<endl;
        //asking for speed
        cout<<"What is the speed of the vehicle in mph? ";
        //accepting it
        cin>>mph;
    }
    //asking for hours
    cout<<"For how many hours has it traveled? ";
    //accepting it
    cin>>hour;
    //looping till a value greater than or equal to 1 is entered
    while(hour<1){
        //asking to enter a value greater than or equal to 1
        cout<<"Please enter a value greater than or equal to 1"<<endl;
        //asking for hours
        cout<<"For how many hours has it traveled? ";
        //accepting it
        cin>>hour;
    }
    //printing Hour Distance Traveled in Miles
    cout<<"Hour Distance Traveled in Miles"<<endl;
    //printing ----------------------------------
    cout<<"----------------------------------"<<endl;
    //loop to print Hour Distance Traveled in Miles
    for(int i=1;i<=hour;i++)
        //printing value of Hour Distance Traveled in Miles
        cout<<i<<" "<<i*mph<<endl;
    return 0;
}

Screenshot:

Input and Output: