#include
     
      char curr;char LL1[1000];int N=0;void scaner();int digital(){         //panduanshifouweishuzi     if(curr >= '0' && curr <= '9')     {     return 1;     }     else {     return 0;     }}int english(){                      if(curr >= 'a' && curr<='z' || curr >= 'A' && curr <= 'Z')   {    return 1;   }  else       return 0;}int yuansuanf(){  if(curr=='+'||curr=='-'||curr=='*'||curr=='/')  {  return 1;  }   else{      return 0;  }}int  end(){    if(curr!='#'){    return 1;        }  else       return 0;}int check(){           if(digital()==1){          scaner();          if(end()==1){              if(yuansuanf()==1){                                         return 1;              }              else if(yuansuanf()==0){                        return 0;                            }          }          else if(end()==0){          return 1;          }          }                return 0;    } void checking(){   int number; qq:   scaner();    if(digital()==1){    while(curr!='#'){      number=check();      if(number==1){         goto qq;      }      else if(number==0){             break;           }    }    }if(number==1){printf("无错误");}else printf("%c错误",curr);}void main(){    char ch;    int i=0;    printf("请输入需要分析的语法：(#结束)\n"); do{        scanf("%c",&ch);        LL1[i] = ch;        i++;    }while(ch != '#');    scaner();    checking();    }void scaner(){   //用于读取源函数的下一个字符    N++;    if(LL1[N] == ' '){        N++;    }else    {        curr = LL1[N];    }}