平成20年度春期試験_基本情報午後問6(C)

h20h_fe_pm6.c

#include <stdio.h>
#include <string.h>

#define MRNUM 50                /* 参考資料名の最大個数 */
#define MRLNG 255               /* 参考資料名の最大文字数 */
#define MARK '\\'               /* 参考資料名の囲み文字 */

void markup_reference(const char *, const char *);

void markup_reference(const char *in_filename,
                      const char *out_finename) {
  FILE *ifp, *ofp;
  char ch, ref_name[MRLNG + 1],
    ref_name_tbl[MRNUM][MRLNG + 1];
  int i, ref_num = 0;

  ifp = fopen(in_filename, "r");
  ofp = fopen(out_finename, "w");
  while ((ch = fgetc(ifp)) != EOF) {
    if (ch != MARK)
      fputc(ch, ofp);
    else {
      for (i = 0; (ref_name[i] = fgetc(ifp)) != MARK; i++);
      ref_name[i] = '\0';
      for (i = 0; i < ref_num; i++)
        if (strcmp(ref_name, ref_name_tbl[i]) == 0)
          break;
      if (i >= ref_num) {
        strcpy(ref_name_tbl[ref_num], ref_name);
        ref_num++;
      }
      fprintf(ofp, "[%d]", i + 1);
    }
  }
  fprintf(ofp, "\n\nReferences\n");
  for (i = 0; i < ref_num; i++)
    fprintf(ofp, "[%d] %s\n", i + 1, ref_name_tbl[i]);
  fclose(ifp);
  fclose(ofp);
}

int main(int argc, char *argv[]) {
  if (argc != 3) {
    printf("Usage: %s infile outfile\n", argv[0]);
    return 1;
  }
  markup_reference(argv[1], argv[2]);
  return 0;
}

平成20年度春季基本情報午後問6 - Mae向きなブログ