Question

error C2440: 'initializing' : cannot convert from 'const int' to 'int *'

#include <iostream>
using namespace std;
int main()
{
int* myballs=8;

cout<<"my balls are"<<*myballs<<endl;
cout<<"adrress is:"<<myballs<<endl;
*myballs=*myballs+1;
cout<<"now,my balls are:"<<*myballs<<endl;
cin.get();
return 0;
}
编译时提示
error C2440: 'initializing' : cannot convert from 'const int' to 'int *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
执行 cl.exe 时出错.

bianliang.obj - 1 error(s), 0 warning(s)
若把int* myballs=8;改为
int *myballs;
*myballs=8;
则编译时候提示 warning C4700: local variable 'myballs' used without having been initialized

bianliang.obj - 0 error(s), 0 warning(s)
能通过编译，但是运行不了，
我用的时vista系统
microsoft visual C++ 6.0
急求解决办法，谢谢

Answer 1

不能转换 int类型为int指针类型

int a = 9 ; //ok
int *pa = &a; //ok

int *pa = 9 ;//error C2440

int *pa;
*pa = 8 ; //errorC4700
C4700 错误中 *pa 没有实际的指向位置,所以不能赋值

int *pa ;
int a;

pa = &a;
*pa = 1234; //ok

Answer 2

修改如下：
#include <iostream>
using namespace std;
int main()
{
int * myballs=NULL;
int a=8;
myballs=&a;
cout<<"my balls are "<<*myballs<<endl;
cout<<"adrress is:"<<myballs<<endl;
*myballs=*myballs+1;
cout<<"now,my balls are:"<<*myballs<<endl;
cin.get();
return 0;
}