get() 和 puts() 未在 dev C++ 中的范围内声明
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gets() & puts() not declared in scope in dev c++
提问by amitection
This is my simple code for a bookshop There is nothing wrong with the code. I am using DevC++ to run the code and after compling it gives out an error which says 'gets' was not declared in this scope & the same error for puts. Please help me.
这是我的一个书店的简单代码 代码没有任何问题。我正在使用 DevC++ 来运行代码，在编译后它给出了一个错误，说“gets”没有在这个范围内声明，而 puts 也有同样的错误。请帮我。
#include<iostream>
#include<conio.h>
#include<stdlib.h>
#include<iomanip>
#include<cstring>
using namespace std;
class Book
{
char *title,*author,*publisher,ans;
int price,quant,quant_ent;
public:
Book()
{
title = new char[50];
author = new char[50];
publisher = new char[50];
price = quant = quant_ent = 0;
}
void getdata()
{
cout<<"\nEnter The Title";
gets(title);
cout<<"\nEnter The Author";
gets(author);
cout<<"\nEnter The Publisher";
gets(publisher);
cout<<"\nEnter The Price";
cin>>price;
cout<<"\nEnter The Quantity";
cin>>quant;
}
void display()
{
cout<<setw(15)<<title<<setw(15)<<author<<setw(15)<<publisher<<setw(10)<<quant
<<setw(10)<<price;
}
void search(char search_title[],char search_author[])
{
if(strcmpi(author,search_author)==0)
{
if(strcmpi(title,search_title)==0)
{
cout<<"\nBook Found!";
cout<<"\nEnter The Quantity: ";
cin>>quant_ent;
if(quant_ent <= quant)
{
cout<<"\nThe Title is: ";
puts(title);
cout<<"\nThe Author is: ";
puts(author);
cout<<"\nThe Publisher is: ";
puts(publisher);
cout<<"\nPrice Of Single Copy: "<<price;
cout<<"\nTotal Price = "<<price*quant_ent;
quant = quant - quant_ent;
}
else
{
cout<<"\nSufficient Quantity Not Available!";
}
}
}
}
};
int main()
{
Book obj[10];
int i=0,ch;
char author[50],title[50];
for(;;)
{
cout<<"\n*******MENU********\n1)Enter Details\n2)Buy Book\n3)Display All Books\n4)Exit";
cin>>ch;
switch(ch)
{
case 1:
obj[i].getdata();
i++;
break;
case 2:
cout<<"\nEnter The Authors Name: ";
gets(author);
cout<<"\nEnter The Title: ";
gets(title);
for(int j=0;j<i;j++)
{
obj[j].search(title,author);
}
break;
case 3:
cout<<setw(15)<<"TITLE"<<setw(15)<<"AUTHOR"<<setw(15)<<"PUBLISHER"<<setw(15)<<"QUANTITY"<<setw(15)<<"PRICE";
cout<<"\n"<<setw(75)<<"-----------------------------------------------------------------------------------------------------";
for(int j=0;j<i;j++)
{
cout<<"\n";
obj[j].display();
}
case 4:
exit(1);
};
}
}
采纳答案by jrok
Because it's declared in stdio.h(cstdioin C++) header and you haven't included it.
因为它是在stdio.h（cstdio在 C++ 中）头文件中声明的，而您还没有包含它。
But you shall not use gets.It's a hopelessly broken function. Use fgetsinstead. Even better, ditch the naked pointers to char arrays and use std::stringclass instead.
但你不得使用gets. 这是一个无可救药的坏函数。使用fgets来代替。更好的是，抛弃指向 char 数组的裸指针并改用std::stringclass。
