指针引用¶
对指针的引用(Reference to pointer
)可以用与对对象的引用(reference to object
)几乎相同的方式声明。指针的引用是一个可修改的值,可以像普通指针一样使用
示例¶
void f(int *&b) {
for (int i = 0; i < 10; i++) {
cout << b[i] << " ";
b[i] = 10 - i;
}
cout << endl;
}
int main(int argc, char *argv[]) {
int *a;
// 指针引用b和指针a指向同一个地址
int *&b = a;
b = new int[10];
for (int i = 0; i < 10; i++) {
b[i] = i;
}
cout << (void *) a << endl;
cout << (void *) b << endl;
f(b);
for (int i = 0; i < 10; i++) {
cout << a[i] << " ";
}
}