forked from natto1784/ooplab
74 lines
1.6 KiB
Org Mode
74 lines
1.6 KiB
Org Mode
* Write a program to define the function template for swapping two items of the various data types such as integer ,float,and characters.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 22.cpp :results output :exports both :wrap src text
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#include <iostream>
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template <typename T, std::enable_if_t<std::is_arithmetic<T>::value, T> = 0>
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void swap(T &x, T &y) {
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x += y;
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y = x - y;
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x -= y;
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}
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int main() {
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char x = '[';
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char y = 'w';
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swap(x, y);
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std::cout << "x = " << x << ", y = " << y;
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return 0;
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}
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#+end_src
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#+LATEX: \clearpage
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* Write a program to define the function template for calculating the square of given numbers with different data types.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 23.cpp :results output :exports both :wrap src text
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#include <iostream>
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template <typename T>
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std::enable_if_t<std::is_arithmetic<T>::value, T> sq(T x) {
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return x * x;
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}
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int main() {
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float x = 4.4;
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std::cout << "double: " << sq((double)5.3) << "\nlong: " << sq(4l);
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return 0;
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}
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#+end_src
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#+LATEX: \clearpage
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* Write a program to illustrate how template functions can be overloaded.
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#+ATTR_LATEX: :options frame=single,breaklines=true
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#+begin_src cpp :tangle 24.cpp :results output :exports both :wrap src text
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#include <iostream>
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template <typename T>
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std::enable_if_t<std::is_integral<T>::value, T> fn(T x) {
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return x * x;
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}
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template <typename T>
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std::enable_if_t<std::is_floating_point<T>::value, T> fn(T x) {
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return --x;
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}
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int main() {
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float x = 4.4;
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std::cout << "floating: " << fn((double)5.3) << "\nintegral: " << fn(4l);
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return 0;
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}
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#+end_src
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