fread快读能与printf/cout一起用吗

inline char gc(){
	static char buf[100001], *p1, *p2;
	return p1==p2 && (p1 = (p2 = buf)+fread(buf, 1, 100000, stdin)) ? EOF : *p2++;
}

template <typename T> inline void read(T &x){
	char ch = getchar(); int w = 1; x = 0;
	while(ch < '0' || ch > '9'){if(ch == '-') w = -1; ch = getchar();}
	while(ch >= '0' && ch <= '9'){x = x*10+ch-'0'; ch = getchar();} x *= w;
}

int n;

int main(){
	read(n);
	cout << n << endl;
	return 0;
}