#include <stdio.h>
#include <math.h>
#include <conio.h>
#define MAX 10
int main()
{ int i, n;
float x(MAX],y [MAX];
float sumx=0.0, sumy=0.0, sumxx=0.0, sumxy=0.0, xmcan, ymean, denom, a, b;
/*Reading data values*/
 printf("Input the number of data points: ");
scanf("%d", &n);
printf(" \n Input x and y values (one set on each line): ");
for(i=1;i<=n;i++)
    scanf("%r/of", &x[iJ, &O]);
/*Computing constants a and b*/
for(i=1;i<=n;i++){
sumx=sumx+x[i];
sumy=sumy+y[i];
sumxx=sumxx+x[i]*x[i];
sumxy=sumxy+x[i]*x[i];
}
xmean=sumx/n;
ymean=sumy/n;
denom=n*sumxx-sumx*sumx;
b=(n*sumxy-sumx*sumy)/denom;
a=ymean-b*xmcan;
printf(nn The line that is fit to the given data is y= %f + %fx.", a, b );
getch 0;
return 0;
}