Question

Inside “Lab1”folder, create a project named “Lab1Ex1”. Use this project to write and run a C++ program that produces:  Define a constant value called MAX_SIZE with value of 10.  Define an array of integers called Class_Marks with MAX_SIZE which contains students Mark. Define a function called “Fill_Array” that takes an array, and array size as parameters. The function fills the odd index of the array randomly in the range of [50- 100] and fills the even index of the array using input from user. The valid input values are between 50-100.

Hint: To get random number you can use rand() function: min + rand()%(max-min+1)  Fill the array by calling Fill_Array function

Answer 1

#include<iostream>
#include <stdlib.h> /* srand, rand */
#include <time.h> /* time */
using namespace std;
void Fill_Array(int marks[],int size);

int main (){
   /* initialize random seed: */
   srand (time(NULL));
   const int MAX_SIZE = 10;
   int Class_Marks[MAX_SIZE];
   Fill_Array(Class_Marks,MAX_SIZE);
   cout<<"\nMarks in the array:\n";
   for(int i=0;i<MAX_SIZE;i++){
       cout<<Class_Marks[i]<<endl;
   }
   return 0;
}

void Fill_Array(int marks[],int size){
   for(int i=0;i<size;i++){
       if(i%2==0){
           cout<<"Enter marks at index "<<i<<": ";
           cin>>marks[i];
           while(marks[i]<50 || marks[i]>100){
               cout<<"Marks should be in the range [50,100]!!\n";
           cout<<"Enter marks at index "<<i<<": ";
           cin>>marks[i];
           }
       } else {
           marks[i] = 50 + rand()%(100-50+1);
       }
   }
}