**Question
I’m a beginner in C++ and I’m trying to read a large input file efficiently. I know that using cin and getline can be slow due to synchronization with C’s stdio. I’ve heard that disabling this synchronization can improve performance. Can someone explain how to do this and provide a code example?
**
Additionally, are there any other best practices I should follow to ensure fast input reading in C++?
I appreciate any tips or suggestions to make this more efficient. Thank you!
here is the basic version of my code:
#include <iostream>
#include <string>
int main() {
std::string line;
while (std::getline(std::cin, line)) {
// Process the line
}
return 0;
}
Here’s the code I’m using to read from stdin. How can I improve its performance?
#include <iostream>
#include <string>
int main() {
std::ios::sync_with_stdio(false); // Disable synchronization
std::cin.tie(nullptr); // Untie cin from cout
std::string line;
while (std::getline(std::cin, line)) {
// Process the line
}
return 0;
}
Any insights or detailed explanations would be greatly appreciated!
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