intlen.c

/* gcc -o intlen intlen.c */

#include <stdio.h>

#define TYPE_INFO(type) #type, (sizeof(type) * 8), sizeof(type)
#define TYPE_FORMAT "%s\t%u\t%u\n"

int main(void)
{
	puts("type\tbits\tbytes");
	printf(TYPE_FORMAT, TYPE_INFO(char));
	printf(TYPE_FORMAT, TYPE_INFO(short));
	printf(TYPE_FORMAT, TYPE_INFO(int));
	printf(TYPE_FORMAT, TYPE_INFO(long));
	printf(TYPE_FORMAT, TYPE_INFO(long long));
	return 0;
}