5.11 자료형 변환 예제

#define _CRT_SECURE_NO_WARNINGS 
#include <stdio.h>

int main()
{
	/* promotions in assignments*/
	/*short s = 64;
	int i = s;

	float f = 3.14f;
	double d = f;*/

	/* demotion in assignments */
	/*d = 1.25;
	f = 1.25;
	f = 1.123;*/

	/* ranking of types in operations */
	// long double > double > float
	// unsigned long long, long long
	// unsigned long, long
	// unsigned, int
	// short int, unsigned short int
	// signed char, char, unsigned char // _Bool
	//Ref: Google 'Integer conversion rank'
	//d = f + 1.234;
	//f = f + 1.234;

	/* automatic promotion of function arguments */
	// 1. Functions without prototypes
	// 2. Variadic functions (ellipsis)

	/* casting operators */
	/*d = (double)3.14f;
	i = 1.6 + 1.7;
	i = (int) 1.6 (int) 1.7;*/

	/* more examples */
	// char c;
	////int i;
	////float f;
	//f = i = c = 'A'; // 65
	//printf("%c%d %f\n", c, i, f);
	//c = c + 2;// 'C', 67
	//i = f + 2 c;// 65.0f + 2 * 67
	//printf("%c%d %f\n", c, i, f); // 199
	//c = 1106; // demolition, 1106 = 0b10001010010, 0b01010010 = 1106 % 256
	//printf("%c\n", c);
	//c = 83.99;
	//printf("%c\n", c);
	
	return 0;
}