1-23

1-23.c

#include <stdio.h>
#define MAXSTRINGS 1000
//
//ファイル操作はまだ学習してないので、Cのソースをcatとパイプで受け取る前提
int main(){
  int c;
  int i = 0;
  int j;
  int qflg; // '-> 1, "-> 2
  int eflg; // normal ->0, // -> 1, /* -> 2

  char str[MAXSTRINGS];
  char newstr[MAXSTRINGS];

  while((c = getchar()) != EOF){
    str[i++] = c;
  }
//  printf("first:%s", str);
//  printf("----------------------\n");
  i = 0;
  j = 0;
  qflg = 0;
  eflg = 0;
  for(;i < MAXSTRINGS; i++){
//    printf("q:%d e:%d ch:%c\n", qflg, eflg, str[i]);
    if(qflg > 0){
      if(qflg == 1 && str[i] == '\''){
        qflg = 0;
      }else if(qflg == 2 && str[i] == '"'){
        qflg = 0;
      }
      newstr[j++] = str[i];
    }else if(str[i] == '\''){
      qflg = 1;
      newstr[j++] = str[i];
    }else if(str[i] == '"'){
      qflg = 2;
      newstr[j++] = str[i];
    }else if(eflg > 0){
      if(eflg == 2 && str[i] == '*' && str[i+1] == '/'){
        eflg = 0;
        i++;
      }else if(eflg == 1 && str[i] == '\n'){
        eflg = 0;
        newstr[j++] = str[i];
      }
    }else if(str[i] == '/' && str[i+1] == '/'){
      eflg = 1;
      i++;
    }else if(str[i] =='/' && str[i+1] == '*'){
      eflg = 2;
      i++;
    }else{
      newstr[j++] = str[i];
    }
  }
  printf("%s", newstr);
}