8 ชนิดตัวเลข

ชนิด	คียร์เวิร์ด	จำนวนไบต์	ขนาด
Character	char	1	–128 to 127
Short integer	short	2	–32767 to 32767
Integer	int	4	–2,147,483,647 to 2,147,438,647
Long integer	long	4	–2,147,483,647 to 2,147,438,647
Long long integer	long long	8	–9,223,372,036,854,775,807 to 9,223,372,036,854,775,807
Unsigned character	unsigned char	1	0 to 255
Unsigned short integer	unsigned short	2	0 to 65535
Unsigned integer	unsigned int	4	0 to 4,294,967,295
Unsigned long integer	unsigned long	4	0 to 4,294,967,295
Unsigned long long integer	unsigned long long	8	0 to 18,446,744,073,709,551,615
Single-precision floating-point	float	4	1.2E–38 to 3.4E381
Double-precision floating-point	double	8	2.2E–308 to 1.8E3082

	#include <stdio.h>
	int main(void)
	{
	printf("\n-----Integer------\n");
	printf("%18s %10d\n","char", sizeof(char));
	printf("%-18s%10d\n","short", sizeof(short));
	printf("%-18s%10d\n","int", sizeof(int));
	printf("%-18s%10d\n","long", sizeof(long));
	printf("%-18s%10d\n","long long",sizeof(long long));
	printf("%-18s%10d\n","unsigned char", sizeof(unsigned char));
	printf("%-18s%10d\n","unsigned short", sizeof(unsigned short));
	printf("%-18s%10d\n","unsigned int", sizeof(unsigned int));
	printf("%-18s%10d\n","unsigned long", sizeof(unsigned long));
	printf("%-18s%10d\n","unsigned long long",sizeof(unsigned long long));
	printf("\n-----Floating Point------\n");
	printf("%-18s%10d\n","float", sizeof(float));
	printf("%-18s%10d\n","double", sizeof(double));
	return 0;
	}

view raw B08_NumberType.c hosted with ❤ by GitHub