A process can have many threads. Once created, a 1 MB stack is allocated to the thread. Stack-allocated memory is used to pass parameters to methods and store local variables defined within the methods.

Stack (stack) - this is the memory area in the address space.

Stack (stack) grows from the bottom up.
Each new element is placed at the very top.
When deleting: the item that is at the very top will be deleted first.

Stack (stack) uses an algorithm "the last one entered - first came out" (last-in-first-out) LIFO

Stack (stack) used for:
• pass parameters to methods
• storing local variables inside a method

When you call the method:
• method parameters are added to the stack.

When the method finishes:
• пmethod aramets are removed from the stack.

Inference: the lifetime of parameters in a method is limited by parentheses within the method)

If a variable is declared inside a method then when you execute the method
when you run the code (where the variable is declared) the variable is added to the stack

When this method finishes:
• this variable is removed from the stack.

Inference: the lifetime of variables declared inside a method is limited by parentheses within a method

When you call this method Calculate values will be placed in the stack t, x, y and z. They are defined in the context of this method. When the method completes, all these variables are destroyed and the memory in the stack is cleared.

And if the parameter or variable of the method represents value type, the stack will store the value of that parameter or variable. For example, in this case, variables and a method parameter Calculate Represent value type int, therefore they will be stored in the stack numeric values.