%{
  #include<stdio.h>
  #include<string.h>
 
  int i=0, j=0, k=0, flag=0;
  char op[10], id[10];
%}
 
%%
  [0-9]+ {flag++;strcpy(id[i],yytext);i++;}
  [+*] {flag--; strcpy(op[j],yytext);j++;}
  .|\n {return 0;}
 
%%
 
int main(){
  printf("Enter expression: ");
  yylex();
 
  if(flag!=1){
    printf("Expression invalid");
  }
  else{
    for(k=0; k<j; k++){
 
    printf("  opperator table: ");
    printf("%c \t",op[k]);
    printf("  symbol table: ");
    printf("%c \t",id[k]);
    }
  }
}
 
int yywrap(){
  return 1; 
}
 
 

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

MSArIDI=

1 + 2