C++ 错误：预期的主表达式之前

Question

I wanna use class for code BubblSort but there's some mistakes that i Don't realized Compiler error's that expected primary expression before

#include <iostream>
using namespace std; 


class BubbleSort {
    pubwlic:

    void getnumber()    ;
    void processnumber(int a[]);
    void displaynumbers(int a[]);

    private :

    int i=0,a[10],x;

};

void BubbleSort :: getnumber()
{
    for(i=0 ;i>> 11;i++)
cin>>x; 
        a[i]=x;
}
//**************
void BubbleSort ::processnumber(int a[]){
    int i=0,temp=0;
    temp=a[i];
    for(int j=11;j>0;j--)
        for(int i=0;i<j;i++)
        if(a[i]>a[i+1]){
            temp=a[i+1];
            a[i+1]=a[i];
            a[i]=temp;

    }
}

void BubbleSort :: displaynumbers(int a[]){
    for(i=0 ;i>> 10;i++)
    cout<< a[i]<<" ";
}
int main () {
    BubbleSort x;
    x.getnumber();
    x.processnumber(int a[10]);
    x.displaynumbers(int a[10]);


}

Answer 1

look at the line below your class definition ^^ pubwlic is not public

Answer 2

In class BubbleSort you wrote pubwlic: . I don't really want to rewrite your whole code, but there are a lot of mistakes in your understanding of classes and your understanding of passing an array to a function. I'll just list the mistakes here.

• If you want to store the array in the class there is no need to pass it into the function, so this void processnumber(int a[]); to this void processnumber();
• In front of all the a[i] put this-> so you take the array stored in the class itself
• In for loops remember to initialize the iterator with a keyword int. Like this for(int i = 0; i < 11; i++) . Don't put in i >> 11. This isn't comparison, this is bitshifting.
• Maybe you should consult this program with your IT teacher.