//
// 2.3.if.switch.cpp
// chapter 2 language usability
// modern cpp tutorial
//
// created by changkun at changkun.de
//
#include
#include
#include
int main() {
std::vector vec = {1, 2, 3, 4};
// before c++17, can be simplefied by using `auto`
const std::vector::iterator itr = std::find(vec.begin(), vec.end(), 2);
if (itr != vec.end()) {
*itr = 3;
}
// after c++17, can be simplefied by using `auto`
if (const std::vector::iterator itr = std::find(vec.begin(), vec.end(), 3);
itr != vec.end()) {
*itr = 4;
}
// should output: 1, 4, 3, 4. can be simplefied using `auto`
for (std::vector::iterator element = vec.begin(); element != vec.end(); ++element)
std::cout << *element << std::endl;
}