纠结郁闷有木有啊标题要长长长长长长长长长长长长长长长才有人看【C++】,该怎么处理

纠结郁闷有木有啊标题要长长长长长长长长长长长长长长长才有人看【C++】
以个栈的模版
#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

template<class Type>

class Stack{
int stacksize;
Type *items;
int top;
public:
explicit Stack(int ss);
Stack(const Stack &st);
~Stack(){delete [] items;}
void push(const Type &item);
Type pop();
Stack &operator=(const Stack &st);
};

template <class Type>
inline Stack<Type>::Stack(int ss=0):
stacksize(ss),top(0){
items=new Type[stacksize];
}

template <class Type>
Stack<Type>::Stack(const Stack &st){
stacksize=st.stacksize;
top=st.top;
items=new Type [stacksize];
for(int i=0;i<top;i++){
items[i]=st.items[i];
}
}

template <class Type>
inline void Stack<Type>::push(const Type& item){

if(top<stacksize)

items[top++]=item;

else
cout<<"the stack is full"<<endl;
}

template <class Type>
inline Type Stack<Type>::pop(){
if(top>0)

return items[top--];
else
cout<<"the stack is empty!"<<endl;
}

template <class Type>
inline Stack<Type> &Stack<Type>::operator =(const Stack<Type> &st){
if(this==&st)
return *this;
delete [] items;
stacksize=st.stacksize;
top=st.top;
items=new Type [stacksize];
for(int i=0;i<top;i++)
items[i]=st.items[i];
return *this;
}

int main(){
int m;char *str;
cout<<"enter stack size:"<<endl;
cin>>m;
if(m<=0) cout<<"error of size"<<endl;
else
Stack<char> st (20);[color=#FF0000][/color]它说这个st没定义，郁闷死了- -
str=new char[m];
cin>>str;
for(int i=0;i<m;i++){
st.push(str[i]);
}
for(int j=0;j<m;j++){
cout<<st.pop()<<endl;
}
cout<<endl;
delete [] str;
return 0;

}

------解决方案--------------------
楼主啦，没见过你这么用的。

错误1：
“Stack<char> st (20）"应该改为
Stack<char> st(20);

错误2：
“Stack<char> st (20);”
仅仅这个定义放在else分支，而其后的代码不属于else分支，故无法引用到这个st定义。
“for(int i=0;i<m;i++){
st.push(str[i]);”

下面是我给你修订后的代码。另外，楼主的代码太乱了，你就不能格式化一下吗？

C/C++ code


#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

template<class Type>

class Stack{
    int stacksize;
    Type *items;
    int top;
public:
    explicit Stack(int ss);
    Stack(const Stack &st);
    ~Stack(){delete [] items;}
    void push(const Type &item);
    Type pop();
    Stack &operator=(const Stack &st);
};

template <class Type>
inline Stack<Type>::Stack(int ss=0):
stacksize(ss),top(0){
    items=new Type[stacksize];
}


template <class Type>
Stack<Type>::Stack(const Stack &st){
    stacksize=st.stacksize;
    top=st.top;
    items=new Type [stacksize];
    for(int i=0;i<top;i++){
        items[i]=st.items[i];
    }
}

template <class Type>
inline void Stack<Type>::push(const Type& item){

    if(top<stacksize)

        items[top++]=item;

    else
        cout<<"the stack is full"<<endl;
}

template <class Type>
inline Type Stack<Type>::pop(){
    if(top>0)

        return items[top--];
    else
        cout<<"the stack is empty!"<<endl;
}


template <class Type>
inline Stack<Type> &Stack<Type>::operator =(const Stack<Type> &st){
    if(this==&st)
        return *this;
    delete [] items;
    stacksize=st.stacksize;
    top=st.top;
    items=new Type [stacksize];
    for(int i=0;i<top;i++)
        items[i]=st.items[i];
    return *this;
}


int main()
{
    int m;char *str;
    cout<<"enter stack size:"<<endl;
    cin>>m;
    
    if(m<=0)
         cout<<"error of size"<<endl;
    else
    {    
        Stack<char> st(20);
        str=new char[m];
        cin>>str;
    
        for(int i=0;i<m;i++){  
            st.push(str[i]);
        }
        for(int j=0;j<m;j++){
            cout<<st.pop()<<endl;
        }
        cout<<endl;
        delete [] str;
    }
    return 0;

}

纠结郁闷有木有啊 标题要长长长长长长长长长长长长长长长才有人看【C++】,该怎么处理

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纠结郁闷有木有啊标题要长长长长长长长长长长长长长长长才有人看【C++】,该怎么处理