Stl Stack Code Example


Example 1: stack c++

stack<int> stk; stk.push(5); int ans = stk.top(5); // ans =5 stk.pop();//removes 5

Example 2: stack stl

#include <iostream> #include<stack> #include<algorithm>  using namespace std;  int main() {     stack<int>st;     stack<int>st1;     st.push(100);     st.push(90);     st.push(80);     st.push(70);     st.pop();     st1.push(10);     st1.push(20);     st1.push(30);     while(!st.empty())     {         cout<<st.top()<<" ";         st.pop();     }     cout<<endl;     while(!st1.empty())     {         cout<<st1.top()<<" ";         st1.pop();     }     cout<<endl;     st.push(100);     st.push(90);     st.push(80);     st.push(70);     st.pop();     st1.push(10);     st1.push(20);     st1.push(30);     st.swap(st1);      while(!st.empty())     {         cout<<st.top()<<" ";         st.pop();     }     cout<<endl;      while(!st1.empty())     {         cout<<st1.top()<<" ";         st1.pop();     }     cout<<endl;     return 0; }

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