Merge pull request #4 from adityyyy/adityyyy-patch-3

Create pairCreation.cpp

Author: adityyyy

CPP/set & pair/pairCreation.cpp

@@ -0,0 +1,22 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main(){
+
+//Pair is a way of creating a Composite datatypes
+// pair<int,int> p; //a pair of 2 ints
+// pair<int,string> p; //a pair of an int and a string
+// pair<vector<int>,string> p; //a pair of a (vector of int) and a string 
+
+//accessing the elements using .first and .second
+pair<string,int> p={"hello", 6};
+cout<<p.first<<" "<<p.second; //prints: hello 6
+
+//Advantages: in case, you want to return multiple values from a function.
+
+//pair<vector<pair<int,vector<int>>>, string>
+
+pair<int,string> a={4, "xyz"};
+p.first = 13;
+cout<<p.first<<" "<<p.second;
+
+}