Sort int[][]

#include <stdio.h>
#include <stdlib.h>
int compare(const void *p1, const void *p2) {
  return ((int *) p2)[4] - ((int *) p1)[4];
}
int main(void) {
  int score[5][5];
  int i, j;
  FILE *fp;
  fp = fopen("testdata.txt", "r");
  if (fp == NULL) {
    printf("ファイルがありません\n");
    return -1;
  }
  for (i = 0; i < 5; i++)
    for (j = 0; j < 4; j++)
      fscanf(fp, "%d", &score[i][j]);
  for (i = 0; i < 5; i++)
    score[i][4] = score[i][1] + score[i][2] + score[i][3];
  qsort(score, 5, sizeof(score[0]), compare);
  for (i = 0; i < 5; i++) {
    printf("%d ", score[i][0]);
    printf("%3d ", score[i][1]);
    printf("%3d ", score[i][2]);
    printf("%3d ", score[i][3]);
    printf("%4d", score[i][4]);
    printf("\n");
  }
  return 0;
}