Question

eciare a class to represent sample data set of 150 elements called DataType. DataType has two member vari member functions and include the functions to generate a sample set of random numbers between 81 and 255, maximum value, and the range ables- an integer array and its size. Declare the basic calculate the mean, median, the minimum value, the

Answer 1

#include<iostream>
#include<stdlib.h>
using namespace std;
//class defination
class Datatype
{
    private:
        int a[150],size;
    public :
        Datatype(); //default constructor
   void generate(); //generate the numbers
   void calculate(); //calculate the mean,median etc...
   void show(); //display the elements
};
//default constructor
Datatype :: Datatype()
{
   size=150; //assign 150 to size
}
//generate method
void Datatype :: generate()
{
   int i;
   //loop to generate 150 random values
   for(i=0;i<size;i++)
   {
   //generate random number between 81 to 255 inclusive
   a[i]=(rand() % (255 + 1 - 81)) + 81;
   }
}
//calculate method
void Datatype :: calculate()
{
    int t,min,max;
    int i,j;
    double mean,median;
        int range,sum=0;
//sort the elements of array
    for(i=0;i<size;i++)
    {
        for(j=i+1;j<size;j++)
        {
           if(a[i]>a[j])
           {
              t=a[i];
              a[i]=a[j];
              a[j]=t;
               }
           }
   }
   //loop to find the sum of all the elements
   for(i=0;i<size;i++)
   sum+=a[i];
   min=a[0]; //assign a[0] to min
   max=a[size-1]; //assign a[149] to max
   range = max-min; //compute the range
   mean = (double)sum/size; //compute the mean
   median = (double)((size/2) + (size/2 +1))/2; //compute the median since it having even number of elements to median = sum of middle elements/2
   //display all the calculated data
   cout<<endl<<"Minimum element : "<<min;
   cout<<endl<<"Mamimum element : "<<max;
   cout<<endl<<"Mean : "<<mean;
   cout<<endl<<"Median : "<<median;
   cout<<endl<<"Range : "<<range;
}
//show method display the array elements
void Datatype :: show()
{
   int i;
   cout<<endl<<"Array elements are \n";
   for(i=0;i<size;i++)
   {
   if(i%10==0) //after 10 element generate a new line to print the data in a formatted manner
   cout<<endl;
  
   cout<<" "<<a[i];  
       }
     
   }
   //driver program
int main()
{
   Datatype dobj;
   dobj.generate();
   dobj.show();
   dobj.calculate();
   }

output

CAUsers ROZYnKRISHNA Desktoplmean median range.exe Array elements are 122 173 115 156 175 230 184 214 93 220 186 226 87 108 242 222 101 123 183 92 97 160 133 234 198 213 177 247 199 201 103 107 152 244 200 218 198 130 141 175 84 92 253 139 254 195 172 92 159 124 253 250 193 113 168 165 22919 135159 147 141 221 173 194 87 196 98 95 154 227 86 221 160 126 206 212 207 149 129 110 104 190 85 112 196 147 107 187 139 225 145 207204 193 94 99 238 85 172 189 221 170 164 210 211 233 112 254 242 202 126 230 253 226 135 83 254 103 143 92 246 142 167 211 173 111 255 87 233 131 181 222 105 222 186 213 172 238 218 138 118 184 139 151 240 90 214 152 119 Minimum element : 83 Mamimum element 255 Mean 169.227 Median 75.5 Range 172 Process exited after 0.05431 seconds with return value Press any key to continue