Pass by value/reference exercise

Author: elstr-512

README.md

@@ -2,6 +2,8 @@
 
 hello :)
 
+https://bcs.wiley.com/he-bcs/Books?action=index&itemId=0470383275&bcsId=6384
+
 https://code.visualstudio.com/docs/cpp/config-linux#_debug-helloworldcpp
 
 https://clang.llvm.org/docs/ClangFormatStyleOptions.html

source/chpt_1_ACppPrimer/print/print.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+
+// Pass by value
+void print_a(int x) {
+    std::cout << "print(int x): " << ++x << std::endl;
+}
+
+// Pass by reference
+void print_b(int& x) {
+    std::cout << "print(int& x): " << ++x << std::endl;
+}
+
+int main(int argc, char const* argv[]) {
+    int num = 5;
+    std::cout << "num = " << num << std::endl << std::endl;
+
+    print_a(num);
+    std::cout << "num = " << num << std::endl << std::endl;
+
+    print_b(num);
+    std::cout << "num = " << num << std::endl << std::endl;
+
+    return 0;
+}