1.6 KiB
1.6 KiB
- Write a program to define the function template for swapping two items of the various data types such as integer ,float,and characters.
- Write a program to define the function template for calculating the square of given numbers with different data types.
- Write a program to illustrate how template functions can be overloaded.
Write a program to define the function template for swapping two items of the various data types such as integer ,float,and characters.
#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;
}Write a program to define the function template for calculating the square of given numbers with different data types.
#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;
}Write a program to illustrate how template functions can be overloaded.
#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;
}