One lap around a standard high-school running track is exactly 0.25 miles. Write a program that takes a number of miles as input
2 answers:
Answer:
import java.util.Scanner;
public class Miles {
public static void main(String[] args) {
//initialization
double Number_Miles;
//print the message
System.out.print("Enter the number of miles: ");
Scanner scn1 = new Scanner(System.in);
Number_Miles = scn1.nextDouble(); //read the input from user
//calculate the laps
double yourValue = Number_Miles/0.25;
//display the output on the screen
System.out.printf("%.2f", yourValue);
}
}
Explanation:
First import the library Scanner than create the class and define the main function. In the main function, declare the variables.
print the message on the screen and then store the value enter by the user into the variable.
Scanner is a class that is used for reading the output. So, we make the object of the class Scanner and then object call the function nextDouble() which reads the input and store in the variable.
After that, calculate the number of laps by dividing the number of miles with the given one lap running track value (0.25 miles).
the output is stored in the variable.
After that, print the value on the screen with 2 digits after the decimal point.
we can use "%.2f" in the printing function in java.
like System.out.printf("%.2f", output);
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Answer:
The entire program is:
#include <iostream>
using namespace std;
int main() {
int userInt;
double userDouble;
char userChar;
string userString;
cout<<"Enter integer:"<<endl;
cin>>userInt;
cout<<"Enter double:"<<endl;
cin>>userDouble;
cout<<"Enter character:"<<endl;
cin>>userChar;
cout<<"Enter string:"<<endl;
cin>>userString;
cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl;
cout<<endl;
cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt<<endl;
cout<<endl;
cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt<<endl<<userDouble<<" cast to an integer is "<<(int)userDouble;
return 0; }
The program in C language:
#include <stdio.h>
int main() {
int userInt;
double userDouble;
char userChar;
char userString[50];
printf("Enter integer: \n");
scanf("%d", &userInt);
printf("Enter double: \n");
scanf("%lf", &userDouble);
printf("Enter character: \n");
scanf(" %c", &userChar);
printf("Enter string: \n");
scanf("%s", userString);
printf("%d %lf %c %s\n", userInt, userDouble, userChar, userString);
printf("\n");
printf("%d %lf %c %s\n%s %c %lf %d \n", userInt, userDouble, userChar, userString, userString, userChar, userDouble, userInt);
printf("\n");
printf("%d %lf %c %s\n%s %c %lf %d\n%lf cast to an integer is %d \n", userInt, userDouble, userChar, userString, userString, userChar, userDouble, userInt, userDouble, (int)userDouble); }
Explanation:
Lets do the program step by step:
1) Prompt the user to input an integer, a double, a character, and a string, storing each into separate variables. Then, output those four values on a single line separated by a space:
Solution:
The program is:
#include <iostream> //to use input output functions
using namespace std; //to identify objects cin cout
int main() { //start of main method
//declare an integer, a double, a character and a string variable
int userInt; //int type variable to store integer
double userDouble; //double type variable to store double precision floating point number
char userChar; //char type variable to store character
string userString; //string type variable to store a string
cout<<"Enter integer:"<<endl; //prompts user to enter an integer
cin>>userInt; //reads the input integer and store it to userInt variable
cout<<"Enter double:"<<endl; //prompts user to enter a double type value
cin>>userDouble; //reads the input double value and store it to userDouble variable
cout<<"Enter character:"<<endl; //prompts user to enter a character
cin>>userChar; //reads the input character and store it to userChar variable
cout<<"Enter string:"<<endl; //prompts user to enter a string
cin>>userString; //reads the input string and store it to userString variable
cout<<userInt<<" "<<userDouble<<" "<<userChar<<" "<<userString<<endl; //output the values on a single line separated by space
So the output of the entire program is:
Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy 99 3.77 z Howdy
(2) Extend to also output in reverse.
Now the above code remains the same but add this output (cout) statement at the end:
cout<<userString<<" "<<userChar<<" "<<userDouble<<" "<<userInt;
Now the output with the same values given as input is:
Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy
99 3.77 z Howdy Howdy z 3.77 99
(3) Extend to cast the double to an integer, and output that integer.
The rest of the code remains the same but add the following output (cout) statement in the end:
cout<<userDouble<<" cast to an integer is "<<(int)userDouble;
Now the output with the same values given as input is:
Enter integer: 99 Enter double: 3.77 Enter character: z Enter string: Howdy 99 3.77 z Howdy Howdy z 3.77 99 3.77 cast to an integer is 3
