Thread: Average of numbers in a file

I am writing a program that will read in an unknown amount of integers and print the average of them. I can't seem to figure out why this won't work.

Code:

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]){
 
 int n, amount = 1, sum = 0, average;
 FILE *fin = fopen(argv[1], "r");
 
 while(fscanf(fin,"%d",&n) != EOF){
     fscanf(fin,"%d",&n);
     sum += n;
     amount++;
  }

 average = sum/amount;

  printf("%d", average);

 fclose(fin);
 return 0;
}

The file is

Code:

2 2

I wrote some test code to print out the sum and amount after the while loop and it printed out 2 2.

EDIT: Nevermind, when i set amount back to 0 it worked. Strange because the first time i had it equal to 0 it didn't work but oh well.

What if your numbers are 1,5,10?

The average of those is 16/3=5.3333333.

Your "average" variable should not be an integer, it should be a float, and you should do floating point division on "sum" and "amount"