Question

Exercise#2: Quiz marks Write a program that generates quiz marks at random, between O and 10 inclusive, for a number (less than 50) of Your program should display the marks, class average, and how many students score students decided by the user. above class average. Sample input/output: nter class size: 15 uiz marks: 8 9 9 1 7 5 5 10 1 07 7 5 8 6 e class average is: 5.87 students scored above average
C++ code blocks

Answer 1

#include<iostream>

#include<stdlib.h>

#include<time.h>

using namespace std;

int main(){

                int n; //size of class

                int sum,i, count_above_average;

                double avg; //to store average

               

                cout<<"Enter class size: ";

                cin>>n;

               

                int marks[50]; //to store marks of class maximum size 50

               

                //random number generator

                srand(time(NULL));

               

                sum=0; //initialize sum to zero

                cout<<"Quiz marks: ";

                for(i=0;i<n;i++){

                                //rand()%11 generates 0 to 10

                                marks[i] = rand()%11;

                                //add marks to sum

                                sum = sum + marks[i];

                                //print marks

                                cout<<marks[i]<<" ";

                }

                cout<<endl;

               

                //calculate average

                avg = (double)sum/n;

                cout<<"The class average is: "<<avg<<endl;

               

                //find no. of students above average

                count_above_average = 0; //initialize to zero

                for(i=0;i<n;i++){

                                if(marks[i]>avg)

                                                count_above_average++;

                }

                //print count of students above average

                cout<<count_above_average<<" students scored above average"<<endl;

               

                return 0;

}

OUTPUT: