#include <stdio.h>

main()
{
	int i = 10;           /* Write comments alongside declarations. */
	int j = 20, k = 30;   /* Can declare two variables in same statement. */
	const int m = 40;     /* Can't change the value of this variable. */

	printf("The value of i is %d.\n", i);
	printf("%d\n", i);

	printf("The value of i is %d, j is %d, and k is %d.\n", i, j, k);
	printf("%d %d %d\n", i, j, k);

	printf("The value of i + j * k is %d.\n", i + j * k);

	i = 20;			/* Can change the value of a variable. */
	printf("The new value of i is %d.\n", i);

	i = 10 * j + k;
	printf("The new value of i is %d.\n", i);

	i = i + 1;		/* Add 1 to the value of i. */
	printf("The new value of i is %d.\n", i);

	printf("I agree 100%%.\n");
}