昨天在一个人的blog中看到他做了一个清除代码中的注释的小程序，于是我自己也来了兴趣。以下是我自己做的，完全是我独立思考的。不过相比之下我的代码比人家的多了很多，唉，心痛呀！！！stack_push、stack_pop 、cope_string与cope_comment这四个函数的代码都copy于我做的那个代码缩排程序里的代码，只有局部做了些删除。----------------------------------------------------------------------------/*清除代码中的注释zhaoyg   08.4.19*/ #include <stdio.h>#include <stdlib.h>typedef struct stack{ char item; stack *next;}stack;void stack_push( stack **,char );stack *stack_pop (stack **);stack *cope_string(FILE *fout,stack *current_node_string);stack *cope_comment(FILE *fout,stack *current_node_comment);int main(){ char current_char;  FILE *pfin,*pfout; stack *current_node=NULL ,*head=NULL;  pfin = fopen("test.txt","r"); pfout = fopen("out.txt","w"); //////////////////////////////////////////////////////// while (fscanf(pfin,"%c",&current_char)!=EOF) {  if (head==NULL)  {   stack_push(&head,current_char);   current_node=head;  }  else  {   stack_push(&current_node,current_char);  } }  fclose(pfin); current_node = head;////////////////////////////////////////////////////////  while (current_node != NULL) {   if (current_node->item == '"')    // string constant  {   current_node = cope_string(pfout,current_node);   continue;  }  else  {       // comment    if ((current_node->item == '/' && current_node->next->item == '*')||    (current_node->item == '/' && current_node->next->item == '/'))   {    current_node = cope_comment(pfout,current_node);    continue;   }   else   {    putc(current_node->item,pfout);    current_node = stack_pop(&current_node);    continue;   }  } } system("pause"); return 0;} void stack_push( stack **pointer,char current_char){ if (*pointer==NULL) {  *pointer = (stack*)malloc(sizeof(stack));  (*pointer)->next = NULL; } else {  (*pointer)->next = (stack*)malloc(sizeof(stack));  *pointer=(*pointer)->next;  (*pointer)->next=NULL; } (*pointer)->item = current_char;} //delet nodestack *stack_pop(stack **pointer){ stack *temp; temp=*pointer; *pointer=(*pointer)->next; free(temp); return *pointer;} stack *cope_comment(FILE *fout,stack *current_node_comment){ char prev; bool bool_cppstyle_comment = 0;  if (current_node_comment->item == '/' && current_node_comment->next->item == '/')  bool_cppstyle_comment = 1;  do {  prev = current_node_comment->item;   //putc( current_node_comment->item,fout );  current_node_comment = stack_pop(&current_node_comment);   if ( current_node_comment->item =='/' && prev == '*' )  {   //putc(current_node_comment->item,fout);   return current_node_comment = stack_pop(&current_node_comment);     }   if ( current_node_comment->next->item =='\n' && bool_cppstyle_comment)  {   //putc(current_node_comment->item,fout);   return current_node_comment = stack_pop(&current_node_comment);  } } while ( 1 );}stack *cope_string(FILE *fout,stack *current_node_string)// deal string-constant{ do {  if (current_node_string->item =='\\')  {   putc(current_node_string->item,fout);   current_node_string = stack_pop(&current_node_string);  }   putc(current_node_string->item,fout);  current_node_string = stack_pop(&current_node_string); } while (  current_node_string->item !='"');  putc( current_node_string->item , fout );  return stack_pop(&current_node_string);}-----------------------------------------------------------------------------------------------------------

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