labs 8: init

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

lab8/22.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+template <typename T, std::enable_if_t<std::is_arithmetic<T>::value, T> = 0>
+void swap(T &x, T &y) {
+  x += y;
+  y = x - y;
+  x -= y;
+}
+
+int main() {
+  char x = '[';
+  char y = 'w';
+
+  swap(x, y);
+
+  std::cout << "x = " << x << ", y = " << y;
+
+  return 0;
+}

lab8/23.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+
+template <typename T>
+std::enable_if_t<std::is_arithmetic<T>::value, T> sq(T x) {
+  return x * x;
+}
+
+int main() {
+  float x = 4.4;
+
+  std::cout << "double: " << sq((double)5.3) << "\nlong: " << sq(4l);
+
+  return 0;
+}

lab8/24.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+template <typename T>
+std::enable_if_t<std::is_integral<T>::value, T> fn(T x) {
+  return x * x;
+}
+
+template <typename T>
+std::enable_if_t<std::is_floating_point<T>::value, T> fn(T x) {
+  return --x;
+}
+
+int main() {
+  float x = 4.4;
+
+  std::cout << "floating: " << fn((double)5.3) << "\nintegral: " << fn(4l);
+
+  return 0;
+}

lab8/file.org

@@ -0,0 +1,73 @@
+* Write a program to define the function template for swapping two items of the various data types such as integer ,float,and characters.
+
+#+ATTR_LATEX: :options frame=single,breaklines=true
+#+begin_src cpp :tangle 22.cpp :results output :exports both :wrap src text
+#include <iostream>
+
+template <typename T, std::enable_if_t<std::is_arithmetic<T>::value, T> = 0>
+void swap(T &x, T &y) {
+  x += y;
+  y = x - y;
+  x -= y;
+}
+
+int main() {
+  char x = '[';
+  char y = 'w';
+
+  swap(x, y);
+
+  std::cout << "x = " << x << ", y = " << y;
+
+  return 0;
+}
+#+end_src
+
+#+LATEX: \clearpage
+
+* Write a program to define the function template for calculating the square of given numbers with different data types.
+
+#+ATTR_LATEX: :options frame=single,breaklines=true
+#+begin_src cpp :tangle 23.cpp :results output :exports both :wrap src text
+#include <iostream>
+
+template <typename T>
+std::enable_if_t<std::is_arithmetic<T>::value, T> sq(T x) {
+  return x * x;
+}
+
+int main() {
+  float x = 4.4;
+
+  std::cout << "double: " << sq((double)5.3) << "\nlong: " << sq(4l);
+
+  return 0;
+}
+#+end_src
+
+#+LATEX: \clearpage
+
+* Write a program to illustrate how template functions can be overloaded.
+
+#+ATTR_LATEX: :options frame=single,breaklines=true
+#+begin_src cpp :tangle 24.cpp :results output :exports both :wrap src text
+#include <iostream>
+
+template <typename T>
+std::enable_if_t<std::is_integral<T>::value, T> fn(T x) {
+  return x * x;
+}
+
+template <typename T>
+std::enable_if_t<std::is_floating_point<T>::value, T> fn(T x) {
+  return --x;
+}
+
+int main() {
+  float x = 4.4;
+
+  std::cout << "floating: " << fn((double)5.3) << "\nintegral: " << fn(4l);
+
+  return 0;
+}
+#+end_src