fast scan in c++
Fast Scan in C++
#include <iostream>
template<typename T>
inline void fastScan(T &x) {
register int c = getchar();
x = 0;
for(; (c<48 || c>57); c = getchar());
for(; c>47 && c<58; c = getchar()) {
x = (x<<1) + (x<<3) + c - 48;
}
}
int main() {
int num;
fastScan(num);
std::cout << "The number entered is: " << num << std::endl;
return 0;
}