#include <algorithm>
#include <cassert>
#include <cstdio>
#include <fstream>
#include <iterator>
#include <iostream>
#include <vector>
int main()
{
//Remove elements from a std::vector
//using std::remove from algorithm.h
{
std::vector<int> v;
v.push_back(0);
v.push_back(42);
v.push_back(1);
v.push_back(42);
v.push_back(2);
v.push_back(42);
v.push_back(3);
std::cout << "v before std::remove: ";
std::copy(v.begin(),v.end(),std::ostream_iterator<int>(std::cout," "));
std::cout << std::endl;
const std::vector<int>::iterator new_end
= std::remove(v.begin(),v.end(),42);
std::cout << "v after std::remove, before erase: ";
std::copy(v.begin(),v.end(),std::ostream_iterator<int>(std::cout," "));
std::cout << std::endl;
v.erase(new_end,v.end());
std::cout << "v after erase: ";
std::copy(v.begin(),v.end(),std::ostream_iterator<int>(std::cout," "));
std::cout << std::endl;
}
//Remove a file using std::remove in cstdio.h
{
//Try to delete the non-existing test.txt file
const bool deletion_failed = std::remove("test.txt");
assert(deletion_failed);
}
{
//Create the file test.txt
std::ofstream f("test.txt");
//Delete it again
const bool deletion_failed = std::remove("test.txt");
assert(!deletion_failed);
}
}
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