C语言实现getline()

/*getline : get line into s, return length */  int getline(char s[], int lim){      int c, i ;      i = 0;      while ( --lim > 0 && (c = getchar()) != EOF && c != '\n') {          s[i++] = c;      }      if (c == '\n') {          s[i ++] = c;      }      s[i] = '\0';      return i;  }