#include <stdio.h>
#include <stdlib.h>
#define NMAX	100

struct student {
  char name[30];
  int  mathpt;
  int  engpt;
  int  jpnpt;
};

int main(int argc, char *argv[])
{
  FILE *stream;
  char buf[500];
  struct student pt[NMAX+1];
  int i, n;
  void dispall(struct student[]);
  int comp_point(const void*, const void*);
  
  if (NULL == argv[1]) {
    stream = stdin;
  } else {
    stream = fopen(argv[1], "r");
    if (NULL == stream) {
      fprintf(stderr, "Cannot open data file [%s]\n", argv[1]);
      exit(1);
    }
  }
  i = 0;
  while (NULL != fgets(buf, sizeof buf, stream)) {
    if (i >= NMAX) {
      fprintf(stderr, "Reached to maximum number(%d)\n", NMAX);
      break;
    }
    n = sscanf(buf, "%29s %d %d %d",
               pt[i].name, &pt[i].mathpt, &pt[i].engpt, &pt[i].jpnpt);
    if (n == 4) {
      i++;
    }
  }
  if (stdin != stream)
    fclose(stream);
  pt[i].name[0] = 0;            /* 終端の印 */

  qsort(pt, i, sizeof pt[0], comp_point);
  dispall(pt);
}

void dispall(struct student pt[])
{
  int i, sum;
  for (i=0; pt[i].name[0] != 0; i++) {
    sum = pt[i].mathpt+pt[i].engpt+pt[i].jpnpt;
    printf("%2d: %-20s, %d, %d, %d | %3d\n",
           i+1, pt[i].name, pt[i].mathpt, pt[i].engpt, pt[i].jpnpt, sum);
  }
}

int comp_point(const void *x, const void *y)
{
  struct student *a = (struct student *)x;
  struct student *b = (struct student *)y;
  /* a と b は構造体へのポインタ
   したがって、メンバへのアクセスは ピリオドでなく -> を使う */
  int sum_a, sum_b;
  sum_a = a->mathpt + a->engpt + a->jpnpt;
  sum_b = b->mathpt + b->engpt + b->jpnpt;
  /* 引算の順番に注意 */
  return sum_b - sum_a;
}