Write a function so that the main() code below can be replaced by the simpler code that calls function original main():

int main() {
double milesperhour;
double minutestraveled;
double hourstraveled;
double milestraveled;

cin > > milesperhour;
cin > > minutestraveled;

hourstraveled = minutestraveled / 60.0;
milestraveled = hourstraveled * milesperhour;
cout < < "miles: " < < milestraveled < < endl; return 0;
}
#include
using namespace std;
// write your answer here.
int main() {
double milesperhour;
double minutestraveled;

cin > > milesperhour;
cin > > minutestraveled;

cout < < "miles: " < < mphandminutestomiles(milesperhour, minutestraveled) < < endl;
return 0;
}

The program illustrates the use of functions.

Functions are used to group similar set of instructions together in order to achieve a specific outcome.

The required function is as follows:

double MphAndMinutesToMiles(double milesPerHour, double minutesTraveled){

   return milesPerHour * minutesTraveled/60;

}

The first line of the function declares the function, and its parameters.

double MphAndMinutesToMiles(double milesPerHour, double minutesTraveled)

The function name is MphAndMinutesToMilesThe function type is doubleThe function parameters are milesPerHour and minutesTraveled

The second line of the function calculates the miles traveled, and returns it back to main().

   return milesPerHour * minutesTraveled/60;

See attachment for complete program and the sample run

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The program to this question can be given as:

Program:

#include <iostream> //header file

using namespace std; //using namespace

double MphAndMinutesToMiles(double milesPerHour, double minutesTraveled) //defining method

{

return (minutesTraveled/ 60.0)*milesPerHour; //return value.

}

int main() //defining main method

{

double milesPerHour,minutesTraveled; //define variable

cout<<"Enter miles per hour :";  

cin >> milesPerHour;  

cout<<"Enter travelling minutes :";

cin >> minutesTraveled;

cout << "Miles: "<< MphAndMinutesToMiles(milesPerHour, minutesTraveled)<< endl;

return 0;

}

Output:

Enter miles per hour :12

Enter travelling minutes :20

Miles: 4

Explanation:

The explanation of the above C++ program can be given as:

In the first header file is include the function is define that is "MphAndMinutesToMiles". This function accepts two parameters that are "milesPerHour and minutesTraveled". Both parameter datatype is double and the function return type is also double. Inside a function calculate miles and return its value.In the main method, two variable defines that takes value from the user side and pass into the function. To print function return value we use "cout" function that prints function return value.

int vowels(string s){

   int count=0;

   for(int i=0;s[i]!='\0';i++){

       if(s[i]=='a' || s[i]=='e' ||s[i]=='i'||s[i]=='o'||

          s[i]=='u'||s[i]=='A'||s[i]=='E'||s[i]=='I'||

          s[i]=='O' || s[i]=='U'){

           count++;

       }

   }

   return count;

}

Explanation:

Create the function with return type int and declare the parameter as a string.

define the variable count for storing the output. Then, take a for loop for traversing each character of the string and if statement for checking the condition of the vowel.

vowel are 'a', 'e', 'i', 'o', 'u' in lower case. we must take care of the upper case as well.

vowel are 'A', 'E', 'I', 'O', 'U' in upper case.

if the condition is true to update the count by 1.

This process continues until the string not empty.

and finally, return the count.