Now that we have learned about the stack data structure and its operations, let's explore some real-world applications where stacks are commonly used.

1. Function Call Stack:

In programming languages, such as C++, the function call stack is an important application of stacks. Whenever a function is called, its parameters, return address, and local variables are stored in a stack frame. The function parameters and variables are pushed onto the stack, and when the function returns, its stack frame is popped off the stack.

Here's an example in C++:

1#include <iostream>
2using namespace std;
3
4void functionB(int n) {
5  if (n > 0) {
6    functionA(n - 1);
7  }
8}
9
10void functionA(int n) {
11  if (n > 0) {
12    functionB(n - 1);
13  }
14}
15
16int main() {
17  functionA(5);
18  return 0;
19}

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#include <iostream>

using namespace std;

​

int main() {

  // Code snippet goes here

  return 0;

}