[TOC]
这是正文
\(E=mc^2\)
\(12345\)
\[ a^2+b^2=c^2 \] 123456789#include<iostream>using namespace std;int main(){ cout<<"Hello world!\n"; return 0;}
123456789
#include<iostream>using namespace std;int main(){ cout<<"Hello world!\n"; return 0;}