Last Sync: 2022-07-15 08:30:04

Software_Engineering/Call_stack.md

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+---
+tags:
+  - Software_Engineering
+  - call_stack
+---
+
+# The call-stack
+
+A [stack](/Data_Structures/Stacks.md) data structure that holds the information of the functions called within a program that allows transfer of the application control from these functions to the main process after code inside the functions has been executed.
+
+## Example
+
+```js
+function greet(who){
+	console.log("Hello " + who);
+}
+
+greet("Harry");
+
+console.log("Bye");
+```
+### Breakdown 
+1. Interpreter receives call to `greet()`
+2. Goes to the definition of this function   (`function greet(who)...`) 
+3. Executes the `console.log` within this function
+4. Returns to the location that called it (`greet("Harry")`)
+5. Finds that there is nothing else to do in this function so moves to next function: the `console.log("bye")
+6. Executes
+7. Returns to line that called it. Finds nothing else to do. Exits program