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#include <fstream>
#include <iostream>
// Отивайки в края и тръгвайки към началото
void Method1(std::ifstream& file) {
file.seekg(0, std::ios::end);
size_t endPos = file.tellg();
while (!file.fail() && file.peek() != '\n') {
file.seekg(-1, std::ios::cur);
}
file.clear();
if (file.tellg() > 0) {
file.seekg(1, std::ios::cur);
}
size_t lineLength = endPos - file.tellg() + 1;
char* buffer = new char[lineLength + 1];
file.getline(buffer, lineLength);
buffer[lineLength] = '\0';
std::cout << buffer << std::endl;
delete[] buffer;
}
// Започвайки от началото и ходейки към края
void Method2(std::ifstream& file) {
file.seekg(0, std::ios::end);
size_t lastIndex = file.tellg();
file.seekg(0, std::ios::beg);
size_t lastNewLine = 0;
while (!file.eof()) {
if (file.get() == '\n') {
lastNewLine = file.tellg();
}
}
file.clear();
file.seekg(lastNewLine, std::ios::beg);
size_t lineLength = lastIndex - file.tellg() + 1;
char* buffer = new char[lineLength + 1];
file.getline(buffer, lineLength);
buffer[lineLength] = '\0';
std::cout << buffer << std::endl;
delete[] buffer;
}
int main() {
char fileName[1024];
std::cin.getline(fileName, 1024);
std::ifstream file(fileName);
if (!file.is_open()) {
std::cout << "Couldn't open file!" << std::endl;
return 1;
}
Method1(file);
Method2(file);
file.close();
}
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