在这里开始新的一页。
hello, world！
distplay('hello,world!');
#include<stdio.h>
int main(){
fprintf(stdout,"hello,world!\n");
return 0;
}
#include<iosteam>
int main(){
std::cout<<"hello,world"<<std::endl;
return 0;
}
CHARACTER*100 STR
STR='HELLO,WORLD'
WRITE(*,FMT="(A)")STR
END
PROGRAM MAIN
CHARACTER*100 STR
STR='HELLO,WORLD'
WRITE(*,FMT="(A)")STR
END PROGRAM
Math from Here
\[G^{\mu \nu}=R_{\mu\nu}-\frac{1}{2}g_{\mu\nu}R=\frac{8\pi G}{c^4}T_{\mu\nu}\] \[\sum_{N=0}^{\infty} N = -\frac{1}{12}\] \[\begin{cases} \oint_l H\cdot dl=\int_S J\cdot ds+\int_S \frac{\partial D}{\partial t}ds,\\ \oint_l E\cdot dl=-\int_S\frac{\partial B}{\partial t}\cdot ds\\ \oint_s B\cdot ds=0\\ \oint_S D\cdot ds=\int_\nu \rho \cdot d\nu \end{cases} \rightarrow \begin{cases} \bigtriangledown \times H=J+\frac{\partial D}{\partial t}\\ \bigtriangledown\times E=-\frac{\partial B}{\partial t}\\ \bigtriangledown\cdot B=0\\ \bigtriangledown\cdot D=\rho \end{cases}\]