#include <stdio.h>
int main(int argc, char *argv[])
{
  float a, b, Txy=0.0, Tx=0.0, Ty=0.0, Sx2=0.0, Sxy=0.0, height, weight, 
    count=0.0;
  char filename[25];
  FILE *fp, *fp2;
  /*ファイルが存在しない時*/
  if ((fp = fopen(argv[1], "r")) == NULL){
    printf("%s Not found...\n,argv[1]");
    exit(1);
  }
  /*読み込み処理*/
  printf("now reading...\n");
  printf("----------------\n-----STATAS-----\n----------------\n");
  while (fscanf(fp,"%f %f\n", &height, &weight) != EOF){
    Tx = Tx + height;
    Ty = Ty + weight;
    Txy = Txy + ( height * weight );
    Sx2 = Sx2 + ( height * height );
    count = count + 1;
    printf("height = %f     weight = %f\n", height, weight);
    printf("Tx = %f         Ty = %f\n",Tx,Ty);
    printf("Txy = %f        Sx2 = %f\n",Txy,Sx2);
    printf("--------  count = %f  --------\n",count);
  }
  Sx2 = Sx2 / count;
  Sx2 = Sx2 - ( Tx * Tx ) / ( count * count );
  Sxy = ( Txy / count ) - ( Tx * Ty ) / ( count * count );
  a = Sxy / Sx2;
  b = Ty / count - a * ( Tx / count );
  /*表示処理*/
  printf("\a HIT!!\n a = %f\n b = %f\n",a,b);
}