Imported previous semester example.

wadehuber · wadehuber · commit 60d423928493 · 2020-07-02T21:54:04.000-07:00
diff --git a/cpp/cpp5/exceptions.cpp b/cpp/cpp5/exceptions.cpp
@@ -0,0 +1,38 @@
+#include<iostream>
+
+int quotient(int top, int bot) {
+    return top / bot;
+}
+
+int shift(int a, int b) {
+    return a * b;
+}
+
+void doStuff(int x, int y) {
+    try {
+        if ( (x==13) || (y==13) ) {
+            throw 13;
+        }
+        std::cout << "  " << x << " * " << y << " = " << shift(x,y) << std::endl;
+        if ( (y == 0) ) {
+            throw 0;
+        }
+        std::cout << "  " << x << " / " << y << " = " << quotient(x,y) << std::endl;
+    }
+    catch(int e) {
+        if (e == 0)
+            std::cout << "Warning: attempt to devide by 0!" << std::endl;
+        else 
+            std::cout << "Unlucky number !" << e << "!" << std::endl;
+    }
+}
+
+int main() {
+    std::cout << "doStuff(2,3):" << std::endl;
+    doStuff(2,3); 
+    std::cout << std::endl << "doStuff(2,0):" << std::endl;
+    doStuff(2,0); 
+    std::cout << std::endl << "doStuff(26,13):" << std::endl;
+    doStuff(13,2); 
+    return 0;
+}
diff --git a/cpp/cpp5/smartptr.cpp b/cpp/cpp5/smartptr.cpp
@@ -0,0 +1,40 @@
+#include<iostream>
+#include<memory>
+
+using namespace std;
+
+int main() {
+
+    shared_ptr<int> sptr1(new int(1));
+    shared_ptr<int> sptr2(new int(2));
+    unique_ptr<int> uptr3(new int(10));
+
+    cout << "Shared pointer1: " << *sptr1 << endl; 
+    cout << "Shared pointer2: " << *sptr2 << endl; 
+    cout << "Unique pointer3: " << *uptr3 << endl; 
+    cout << endl;
+
+    *sptr1 = 3;
+    cout << "sptr1 value changed" << endl;
+    cout << "Shared pointer1: " << *sptr1 << endl; 
+    cout << "Shared pointer2: " << *sptr2 << endl; 
+    cout << "Unique pointer3: " << *uptr3 << endl; 
+    cout << endl;
+
+    sptr2 = sptr1;
+    cout << "sptr2=sptr1 " << endl;
+    cout << "Shared pointer1: " << *sptr1 << endl; 
+    cout << "Shared pointer2: " << *sptr2 << endl; 
+    cout << "Unique pointer3: " << *uptr3 << endl; 
+    cout << endl;
+
+    // sptr2 = new int(4);
+    sptr2.reset(new int(4));
+    cout << "sptr2 changed" << endl;
+    cout << "Shared pointer1: " << *sptr1 << endl; 
+    cout << "Shared pointer2: " << *sptr2 << endl; 
+    cout << "Unique pointer3: " << *uptr3 << endl; 
+    cout << endl;
+
+    return 0;
+}
