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那个高人帮忙找异常

发布时间: 2013-01-28 11:49:56 作者: rapoo

那个高人帮忙找错误




/*㈠ 题目:文件操作

㈡ 设计的主要思路
①以本学期的重点,面向对象的"类"为基础,构建主要框架;
②用文件流操作为方法进行编码;
③结合面向过程的程序编写技巧进行各函数块得代码编写;
④用C++代码编写思想完善整个程序。
㈢ 主要功能
① 创建自己所想的文本文件;
② 在创建的文件上写自己想要写的内容;
③ 展示内容;
④ 添加内容;
⑤ 计算文本内容的行数和段数;
⑥ 判断内容中的符号是否匹配。

*/

#include<iostream>
#include<fstream>
#include<cstdlib>
#include<string>
using namespace std;


class txt
{
private:
fstream in;//文件输入输出对象
fstream out;
char file[30];//存放文件的名字
public:
txt();//构造函数原型
~txt()//析构函数
{
in.close();//关闭文件流操作
out.close();
}
void menu();//菜单
void create_txt();//创建文本
void add_txt_content();//添加文本
void show_content();//展示文本
void figure_out_lines();//计算行数
void figure_out_paragraph();//计算段数
void check_sign();//检查匹配符
};

void txt::menu()
{
cout<<" Main MENU "<<endl;
cout<<"********************************************************"<<endl;
cout<<" 1. create txt "<<endl;
cout<<" 2. add txt content "<<endl;
cout<<" 3. show content on the screen "<<endl;
cout<<" 4. figure out the total paragraph "<<endl;
cout<<" 5. figure out lines "<<endl;
cout<<" 6. check the signs "<<endl;
cout<<" 7. exit "<<endl;
cout<<"*********************************************************"<<endl;
}

txt::txt()
{
cout<<"看清菜单按步骤做哦!:"<<endl;
cout<<"文件例如:e:\\hui.txt"<<endl;


}

void txt::create_txt()
{
cout<<"请输入文件名和保存的位置:"<<endl;
cin>>file;
out.open(file,ios::out|ios::trunc);
if(!out)
{
cout<<"error!can't open "<<file<<'!';
exit(1);
}
else
cout<<"the txt file has created!"<<endl;
out.close();
out.clear();//清除原来的所有操作,为了进行下次的新操作
}

void txt::add_txt_content()
{
char c;
cout<<"write something on the screen,then the words will be added in txt file(end with #):"<<endl;
out.open(file,ios::out|ios::app);//以输出文件流打开方式,内容添加在文后
if(!out)
{
cout<<"error!can't open "<<file<<'!';
exit(1);//相当于return ,退出
}
while((c=cin.get())!='#')//cin不能输入空格,只能用cin.get()
{
out<<c;
}
out.close();
out.clear();
}

void txt::show_content()
{
char buffer[10000];
in.open(file,ios::in);
if(!in)
{
cout<<"error!can't open "<<file<<'!';
exit(1);
}
cout<<"the content are below:"<<endl;
while(!in.eof())
{
in.getline(buffer,10000,'#');///把一万个字符写入buffer数组,遇见#号就结束
cout<<buffer<<endl;

}
cout<<endl;
in.close();
in.clear();
}

void txt::figure_out_paragraph()
{
char c1;
int duan=0;
int kongge=0;
in.open( file,ios::in);
in.get(c1);
while(!in.eof())
{
if(c1==' ') kongge++;//计算段是先计算空格,文本前两个是空格
else if(kongge==2)
{
duan++;
kongge=0;
}
in.get(c1);
}
cout<<"有"<<duan<<"段"<<endl;
in.close();
in.clear();
}

void txt::figure_out_lines()
{
char c;
int n=0;
in.open(file,ios::in);
if(!in)
{
cout<<"error!can't open "<<file<<'!';
abort();
}
while(!in.eof())
{
in.get(c);
if(c=='\n')//判断行是遇见回车键就是一行
n++;
}
cout<<"这个篇文章,有"<<n<<"行"<<endl;
in.close();
in.clear();
}

void txt::check_sign()
{
stack <char> s;
char c,ch1,ch2,ch;
int flag=1;
int i=0;
in.open(file,ios::in|ios::binary);
cout<<"请输入你要判断的符号: "<<endl;
cout<<"正符号: "<<endl;
cin>>ch1;
cout<<"反符号: "<<endl;
cin>>ch2;
while(ch=='y'||ch=='Y')
{
while(!in.eof())
{
in.get(c);


if(c==ch1||c==ch2)
{
if(c==ch1)


s.push(c);
else
{
if(s.stkempty())
{
cout<<"第"<<i+1<<"个字符左边缺"<<ch1<<endl;
flag=0;
break;
}
else
s.pop();
}
if(!s.stkempty())
cout<<"缺"<<ch2<<endl;
else if(flag)
cout<<ch1<<"与"<<ch2<<"匹配!"<<endl;
}
i++;
}
cout<<"继续吗?(y/n)";cin>>ch;
cout<<"请输入你要判断的符号: "<<endl;
cout<<"正符号: ";cin>>ch1;
cout<<"反符号: ";cin>>ch2;
}
}

int main(void)
{
txt t;
int choice;
t.menu();
while(1)
{
cout<<"请输入你的选择:";
cin>>choice;
switch(choice)
{
case 1:
t.create_txt();
break;
case 2:
t.add_txt_content();
break;
case 3:
t.show_content();
break;
case 4:
t.figure_out_paragraph();
break;
case 5:
t.figure_out_lines();
break;
case 6:
t.check_sign();
break;
case 7:
default:
return 0;
}
}
return 0;
}



[解决办法]

 


void txt::check_sign()
{
stack<char> s; // stack在哪?
..............
..............
}

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