C代码测试

int main()
{
   printf("Hello, World!");
   return 0;
}

struct Books
{
   char  title[50];
   char  author[50];
   char  subject[100];
   int   book_id;
} book; 

int max(int num1, int num2) 
{
   int result;

   if (num1 > num2) {
      result = num1;
   } else {
      result = num2;
   }
   return result; 
}

LaTeX 公式测试

x_{\color{Maroon}1,2}=\frac{-b\pm\sqrt{{\color{Maroon}b^2-4ac}}}{2a}