const关键字

@H_301_1@#include <stdio.h>

int main() {

   const int  LENGTH = 10;
   const int  WIDTH = 5;
   const char NEWliNE = '\n';
   int area;  

   area = LENGTH * WIDTH;
   printf("value of area : %d", area);
   printf("%c", NEWliNE);

   return 0;
}