Assignment to '*' form incompatible pointer type 'linkstack' {aka '*'} problem solving

Error reporting style

The warning says ：“ Cannot assign values to variables of different types ”

So I just ctrl Click this wave line here , Jump to the defined place .

One next Structure member variables struct StackNode *,
and
A structure variable LinkStack,

Although the underlying logic of these two variables is struct StackNode *, But the compiler just concludes that your two variables are of different types .

resolvent

Add one Coercive transformation You can solve the problem , Think of compilers as different types , Convert to the same type .