源程序:
#include <iostream>
using namespace std;
int main()
{
int *p1;
int **p2 = &p1;
int b = 20;
p1 = &b;
cout << **p2 << endl;
system("pause");
return 1;
}
运行结果:
源程序:
#include <iostream>
using namespace std;
int main()
{
int *p1;
int **p2 = &p1;
int b = 20;
p1 = &b;
cout << **p2 << endl;
system("pause");
return 1;
}
运行结果: