Thread: Program for average, geometric mean, harmonic mean

You could store the numbers in a linked list, or an array (assuming you want to keep all the numbers).

Such as,

Code:

#define MAX_EQUATIONS 32

/* ... */

int num = 0,
    i = 0,
    z = 0,
    product = 0,
    m = 0;
int numbers[MAX_EQUATIONS] = {0};

/* ... */

for(m = 0; m < MAX_EQUATIONS; m++)
{
    printf("Enter a number (0 to quit): ");
    scanf("&#37;d", &num);
    
    if(num != 0)
    {
        numbers[i] = num;
        ++i;
    }else{
        break;
    }
}

/* do equations with numbers from [0, i] */

for(z = 0; z < i; z++)
{
    product *= numbers[z];
    sum += numbers[z];
}

/* etc */

of course that's purely a demonstration.

here is untested code
now you figure it out what should be the variable types

Code:

   /*everytime you get a new number do this*/
    sum = sum + num;
    product = product*num;
    inverse_sum = inverse_sum + 1/((float)num);
    num_count = num_count + 1;
  /*num_count is the total number of numbers entered*/

   /* calculate the mean  as follows */
    printf("Average: %f\n",sum/((float)num_count));
    printf("H mean : %f\n",num_count/inverse_sum);
    printf("G mean: %f\n", pow(product,1/(float)num_count);

include math.h in your code & your compile command should have -lm..
if your file is named as mean.c then the command will be like

Code:

$cc -o mean -lm mean.c

THIS CODE HAS LIMITATIONS. I THINK YOU MIGHT BE KNOWING THEM. IF NOT KNOW THEM FIRST

Don't give away the solution, especially if this is homework - it only encourages people to beg for work to be done for them.

> printf("G mean: %f\n", powf((float)product,1/(float)num_count);
Missing something here...? Also why would product need to be a double if you're going to cast it back to float anyway?