華為軟件編程題：簡單的四則運算

                           
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <.h>
 #include <stack>
 
 
  Precede( a,                                          ((b == ) || (b ==                    ;    
              
                   ;    
                                   ((b == ) || (b ==                    -;    
               
                                          printf(                
  Operate( j,  k,       
                              k +             
                        k -             
                        k *             
                       
              k /             
                      printf(                
  calculate( len,  *      
      ((len <=  ) || (expStr ==          printf(  
      i = , j = , k =      std::stack<>     std::stack<> 
      (i <           ((expStr[i] >= ) && (expStr[i] <=               date.push(expStr[i] -              i++            ((expStr[i] == ) || (expStr[i] ==              || expStr[i] ==  || expStr[i] ==                                  i++              
                  
                                                              -:    
                         j =                          k =                          
                           
                                              
                      :        
                          i++                                                                       printf(                                     
              printf(                
      (!          j =          k =     
       
        len =       i= , input_flag =      
                    
      (!          printf(         input_flag = scanf(, &          (!              printf(             
    
      *expStr = ( *)malloc(len  * (     input_flag =       (!          printf(          (i = ; i < len; i++              input_flag = scanf(, &             
                 
              (!                  printf(                      
     printf(