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# Lab7 - Exercise 4 Program Shell4 averages the values on...

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/* Exercise 1 // Program Shell3 reads miles and hours and prints miles // per hour. / #include <iostream> #include <iomanip> using namespace std; u void GetData (float &miles, float &hours); v int main () { float miles; float hours; float milesPerHour; cout << fixed << showpoint; GetData (miles, hours); milesPerHour = miles / hours; cout << setw(10) << miles <<" miles" << setw(10) << hours <<" hours" << setw(10) << milesPerHour <<" miles per hour" << endl; return 0; } //***************************************************** / void GetData (float &miles, float &hours) { cout<<"Please enter the number of miles and the number of hours, respectively"<<endl; cin>>miles>>hours; } Exercise 3 The answers in exercise 1 and 2 are different because milesPerHour=miles/hours. In exercise 1, the miles are entered first and hours second, so you get the correct value for milesPerHour. In exercise 2, hours are entered first and miles second, but milesPerHour is still equal to miles/hours, so the number is different.

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Unformatted text preview: Exercise 4 // Program Shell4 averages the values on file dataFile. / #include <iostream> #include <fstream> using namespace std; u void ReadAndSum(ifstream&, int&, int&, int&, float&); // Reads, counts, and averages values on a file. / int main () { ifstream dataFile; int number; int sum=0; int numberOfValues; float average; cout << fixed << showpoint; dataFile.open("Shell4.dat"); ReadAndSum(dataFile, number, sum, numberOfValues, average); cout << "The average of " << numberOfValues << " values is " << average << endl; return 0; } //*************************************** / void ReadAndSum (ifstream &dataFile, int &number, int &sum, int &numberOfValues, float &average) // Reads, counts, and averages values on a file, then sends to the main function to print. { dataFile>>number; d while(dataFile) { dataFile>>number; sum=sum+number; numberOfValues++; n } average=sum/numberOfValues; } */...
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Lab7 - Exercise 4 Program Shell4 averages the values on...

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