Write a C/C+ program that uses a for loop to input data points (e.g. a list of t

Question

Write a C/C+ program that uses a for loop to input data points (e.g. a list of test grades) into a 1 dimensional vector called Grades [] from the keyboard using a for loop or while loop. Also use for loops to calculate the mean, standard deviation and minimum/maximum values in the input data set. Use the modulus function (Grades[i] %2) to find the number of even and odd numbers in the data set. Test run your script with following data set Grades[] = (98, 78, 67, 55, 69, 79, 91, 83, 86, 74, 77, 99, 58, 63, 66, 72, 82, 87, 93, 64, 59, 80, 68, 85, 75, 96, ]; For (int I = 0; I

Explanation / Answer

    /*
     * C program to input numbers and find the mean, variance and standard deviation
     */
    #include <stdio.h>
    #include <math.h>
    #define MAXSIZE 50
    void main()
    {
        float x[MAXSIZE];
        int i, n, even, odd, num;
   float average,variance, std_deviation, sum = 0, sum1 = 0, minimum, maximum, location = 1;
        printf("Enter the number of elements in array ");
        scanf("%d", &n);
        printf("Enter %d real numbers ", n);
        for (i = 0; i < n; i++)
        {
            scanf("%f", &x[i]);
        }
        /* Compute the sum of all elements */
        for (i = 0; i < n; i++)
        {
            sum = sum + x[i];
        }
        average = sum / (float)n;
        /* Compute variance and standard deviation */
        for (i = 0; i < n; i++)
        {
            sum1 = sum1 + pow((x[i] - average), 2);
        }
        variance = sum1 / (float)n;
        std_deviation = sqrt(variance);

       /* Compute max of array */
       maximum = x[0];
        for (i = 0; i < n; i++)
        {
           if (x[i] > maximum)
            {
             maximum = x[i];
             location = i+1;
            }
       }

minimum = x[0];
    for ( i = 1 ; i < n ; i++ )
    {
   if ( x[i] < minimum )
   {
       minimum = x[i];
           location = i+1;
        }
    }

        printf("Minimum element is present at location %d and it's value is %d. ", location, minimum);
        printf("Maximum element is present at location %d and it's value is %d. ", location, maximum);
        printf("Average of all elements = %.2f ", average);
        printf("variance of all elements = %.2f ", variance);
        printf("Standard deviation = %.2f ", std_deviation);

printf("Even numbers in the array are : ");
        for (i = 0; i < n; i++)
        {
        if (x[i]%2 == 0)
            {
                even++;
                printf("%d ", x[i]);
            }
        }
        printf(" Odd numbers in the array are: ");
        for (i = 0; i < n; i++)
        {
            if (x[i] % 2 != 0)
            {
                odd++;
                printf("%d ", x[i]);
            }
        }
        printf(" There are %d even numbers and %d odd numbers out of %d given numbers. ",even,odd,num);
      
    }

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