LAB 5.4 Nested Loops Bring in program nested.cpp from the Lab 5 folder (this is Sample Program 5.6 from the Pre-lab Reading Assignment). The code is shown below: // This program finds the average time spent programming by a student // each day over a three day period. // PLACE YOUR NAME HERE #include using namespace std; int main() { int numStudents; float numHours, total, average; int student,day = 0; // these are the counters for the loops cout << "This program will find the average number of hours a day" << " that a student spent programming over a long weekend\n\n"; cout << "How many students are there ?" << endl << endl; cin >> numStudents; for(student = 1; student <= numStudents; student++) { total = 0; for(day = 1; day <= 3; day++) { cout << "Please enter the number of hours worked by student " << student <<" on day " << day << "." << endl; cin >> numHours; continues Lesson 5B 71 total = total + numHours; } average = total / 3; cout << endl; cout << "The average number of hours per day spent programming by " << "student " << student << " is " << average << endl << endl << endl; } return 0; } Exercise 1: Note that the inner loop of this program is always executed exactly three times—once for each day of the long weekend. Modify the code so that the inner loop iterates n times, where n is a positive integer input by the user. In other words, let the user decide how many days to consider just as they choose how many students to consider. Sample Run: Exercise 2: Modify the program from Exercise 1 so that it also finds the average number of hours per day that a given student studies biology as well as programming. For each given student include two prompts, one for each subject. Have the program print out which subject the student, on average, spent the most time on.
LAB 5.4 Nested Loops
Bring in program nested.cpp from the Lab 5 folder (this is Sample Program 5.6
from the Pre-lab Reading Assignment). The code is shown below:
// This program finds the average time spent
// each day over a three day period.
// PLACE YOUR NAME HERE
#include <iostream>
using namespace std;
int main()
{
int numStudents;
float numHours, total, average;
int student,day = 0; // these are the counters for the loops
cout << "This program will find the average number of hours a day"
<< " that a student spent programming over a long weekend\n\n";
cout << "How many students are there ?" << endl << endl;
cin >> numStudents;
for(student = 1; student <= numStudents; student++)
{
total = 0;
for(day = 1; day <= 3; day++)
{
cout << "Please enter the number of hours worked by student "
<< student <<" on day " << day << "." << endl;
cin >> numHours;
continues
Lesson 5B 71
total = total + numHours;
}
average = total / 3;
cout << endl;
cout << "The average number of hours per day spent programming by "
<< "student " << student << " is " << average
<< endl << endl << endl;
}
return 0;
}
Exercise 1: Note that the inner loop of this program is always executed exactly
three times—once for each day of the long weekend. Modify the code so
that the inner loop iterates n times, where n is a positive integer input by
the user. In other words, let the user decide how many days to consider
just as they choose how many students to consider.
Sample Run:
Exercise 2: Modify the program from Exercise 1 so that it also finds the average
number of hours per day that a given student studies biology as well as
programming. For each given student include two prompts, one for each
subject. Have the program print out which subject the student, on average,
spent the most time on.
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