add std::pair and std::tuple examples

modern-cpp/CMakeLists.txt

@@ -22,6 +22,8 @@ set(MY_APP_NAMES
   lambda-with-closures-byval
   lambda-with-closures-byval-all
   lambda-with-return-type
+  std-pair
+  std-tuple
 )
 
 foreach(APP_NAME IN LISTS MY_APP_NAMES)

modern-cpp/std-pair.cpp

@@ -0,0 +1,18 @@
+#include <iostream>
+#include <utility>
+
+int main() {
+    // Creating a pair of int and std::string
+    auto myPair = std::make_pair(1, "Hello");
+
+    // Accessing elements
+    std::cout << "First: " << myPair.first << ", Second: " << myPair.second << std::endl;
+
+    // Modifying elements
+    myPair.first = 2;
+    myPair.second = "World";
+
+    std::cout << "First: " << myPair.first << ", Second: " << myPair.second << std::endl;
+
+    return 0;
+}

modern-cpp/std-tuple.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <tuple>
+#include <string>
+
+int main() {
+    // Creating a tuple of int, std::string, and float
+    auto myTuple = std::make_tuple(1, "Hello", 3.14f);
+
+    // Accessing elements using std::get
+    std::cout << "First: " << std::get<0>(myTuple) 
+            << ", Second: " << std::get<1>(myTuple) 
+            << ", Third: " << std::get<2>(myTuple) << std::endl;
+
+    // Modifying elements
+    std::get<0>(myTuple) = 2;
+    std::get<1>(myTuple) = "World";
+    std::get<2>(myTuple) = 1.59f;
+
+    std::cout << "First: " << std::get<0>(myTuple) 
+            << ", Second: " << std::get<1>(myTuple) 
+            << ", Third: " << std::get<2>(myTuple) << std::endl;
+
+    return 0;
+}