char指针改成int指针是什么意思

Question

I have the following code from previous exam in c:我在 c 中的先前考试中有以下代码：

int main(int argc, char **argv) {
    char s[] = "123";
    int* a = (int*) s;
    printf(("%x"),*a);
    return 0;
}

The output is: 333231 output为： 333231

My question is why?我的问题是为什么？ how does changing the pointer effect it?更改指针如何影响它？

Answer 1

You don't have to declare a separate variable.您不必声明单独的变量。 This would do:这会做：

printf(("%x"),(int*)s);

The pointer type dictates how the pointee is interpreted when the pointer is dereferenced.指针类型决定了指针被取消引用时如何解释指针。