Help in c++ program?

i want to write a program that calculates arithmatic and geometric mean in c++ , so i need help

You aren't very specific with your request. How will the numbers be input (e.g. entered at the console, constant array, from a file) into the program? Any particular number format (e.g. integers, scientfic notation, simple floating point, double precision, fractions, sequence range, symbolic)?

Do you have a start to your program that you could share? This would help answer some the questions above. Is this a homework problem? Do you simply need hints regarding the general concepts for a computing solution or specific help on how to code certain aspects?

The arithmetic mean is pretty straight forward; it's just the average of your input numbers. However, the geometric mean can be done in several ways. I recommend taking the log of each input number, adding each log (i.e. multiply), dividing (i.e. nth-root) by the number of items, and finally the anti-log. Below is a quick attempt:

#include <math.h>
#include <iostream>
using namespace std;
int main () {
double nums[] ={8.3, 7.5, 1.9, 6.2, 2.4}; // input numbers
int numCount = sizeof(nums); // number of elements
double arithmetic_mean=0.0, geometric_mean=0.0;
for (int counter=0; counter<numCount; counter++) {
arithmetic_mean += nums[counter];
geometric_mean += log(nums[counter]);
}
arithmetic_mean /= numCount; // calc average
geometric_mean = exp(geometric_mean/numCount); // calc e ^ nth-root
cout << "arithmetic mean = " << arithmetic_mean << endl;
cout << "geometric mean = " << geometric_mean << endl;
return 0;
}

Obviously, you'll want to substitute the appropriate input code for the nums[] array. Also, I assumed double precision calculations but you may have different requirements.