int *a = NULL; int *b = "a"; a = b;
时间: 2024-05-29 13:12:12 浏览: 12
This code will not compile because we are trying to assign a string literal (which is a constant array of characters) to a pointer to an integer. The types are incompatible, and the compiler will generate an error. Additionally, even if we change the type of `b` to `int*`, we cannot dereference `b` because it points to a null address. This would result in undefined behavior.
相关问题
int*a=*b=NULL;
This is not a valid C++ statement.
It appears to be trying to declare two pointers, 'a' and 'b', and initialize them to NULL. However, the syntax is incorrect.
To declare a pointer variable in C++, the '*' symbol should come before the variable name, not before the value being assigned. Additionally, 'a' and 'b' should be separate variables, not dereferencing the same pointer.
Here's a corrected example that declares two separate pointer variables and initializes them to NULL:
```
int* a = NULL;
int* b = NULL;
```
int *a = NULL;
This code declares a pointer named "a" and initializes it to NULL. This means that "a" currently does not point to any memory location. It is important to note that dereferencing a NULL pointer can result in undefined behavior, so it is important to properly initialize pointers before using them.
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