So here I am writing this code and I am having problems with something basic, but I think I am overlooking something simple. Reading a text file I had to come up with arithmetic sum and root-mean-square average. the arithmetic sum is fine but the root-square-mean isn't correct because after the first while loop i can't change it.

Code:

And here is the CodeCode:-4.1 -2.2 -0.5 1.2 3.3 4.6 5.1 2.1 0.2 -3.6 -4.1 0.2 0.5 2.2 4.1 -0.2 -1.2 -3.3 -4.6 -5.0 -2.2 -1.1 0.8 3.2 -0.1 -4.8

Code:

i am gettingCode:/* Christopher R Smith COMP1200 - Fall 2008 Assignment 6 Program: Average Value Program ------------------------------------------------------------------------------------------------------------- Taking surface measurements from a text file, compute and display the Arithmetic Mean Value, the Root Mean Square Average, and the Max Roughness Height -------------------------------------------------------------------------------------------------------------- */ #include <stdio.h> #include <math.h> int main() { FILE *inp; double value, mean, root_mean_square, sum=0, max_height; int numValue=0, count; inp = fopen("surface.txt", "r"); while ( ( fscanf ( inp,"%lf", &value ) ) == 1 ) { sum += fabs(value); numValue++; } mean = sum / numValue; while ( ( fscanf ( inp,"%lf", &value ) ) == 1 ) { sum += pow( fabs(value), 2 ); numValue++; } root_mean_square = sqrt( sum / numValue); while ( ( fscanf ( inp,"%lf", &value ) ) == 1 ) { double max=-10000, min=10000; if (value >= max) max = value; else min = value; ; max_height = max - min } printf( "Arithmetic mean value %.2lf\n", mean); printf( "Root-mean-square average %.2lf\n", root_mean_square); printf( "Maximum roughness height %.2lf\n", max_height); return (0); }

No matter what I do toCode:64.500000 Arithmetic mean value 2.48 Root-mean-square average 1.58 Maximum roughness height 1889828851749420549890302903237191694835027000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.00

I can't manipulate the sum , it stays at 64.5000000 from the first calculation inCode:while ( ( fscanf ( inp,"%lf", &value ) ) == 1 ) sum =+ pow ( (fabs(value)), 5);

Code:while ( ( fscanf ( inp,"%lf", &value ) ) == 1 ) { sum += fabs(value); numValue++; } mean = sum / numValue;