week3class2 review of C for datastructure

#include <stdio.h>
#include <math.h>
#define MAX_DEGREE 10
/*to do here
1.manipulate the pointer
2.use of pow
3.saving polynomial in two dimentional array 8x의3승 + 7x의 1승 + 1
4.saving polynomial in struct
5.using define
*/
typedef struct {
int coef[3];
int expon[3];
}polyStruct;

int main()
{
 //1.
 printf("1. manipulate the pointer \n");
 int toBePointed = 2;
 int* ptr = &toBePointed;

 printf("Addr of toBePointed : %d, value : %p\n", ptr, *ptr);
 //??why zeros are printed??

 //2.
 printf("\n2.use of pow \n");
 int base = 2;
 int power = 6;
 int result = pow(base, power);

 printf("2 power 6 is %d\n", result);

 //3.
 printf("\n3.saving polynomial in two dimentional array 8x의3승 + 7x의 1승 + 1\n");
 int degree = 4;//최고차항
 int poly[degree] = {8,0,7,1};

 for(int i = 0; i<degree; i++)
 {
  printf("%dx %d승\n", poly[(i)], 4-i);
 }

 //4.
 printf("\n4.saving polynomial in struct \n");
 polyStruct polyStruct1;
 polyStruct1.coef[0] = 8;
 polyStruct1.coef[1] = 7;
 polyStruct1.coef[2] = 1;
 polyStruct1.expon[0] = 3;
 polyStruct1.expon[1] = 1;
 polyStruct1.expon[2] = 0;

 for(int i = 0; i<=2; i++)
 {
  printf("%dx %d승\n", polyStruct1.coef[i], polyStruct1.expon[i]);
 }
 return 0;
};


/* soso very great to back to school, far better than part time job...everythiing is much interesting!!!!
plus i forgot a lot of coding heeh.....
*/