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neg.c
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neg.c
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#include <stdio.h>
#include <unistd.h>
#include <stdint.h>
#include <errno.h>
int main()
{
/*
int8_t b8 = 0xff;
int16_t b16 = 0xffff;
int32_t b32 = 0xffffffff;
uint32_t ub32 = 0xffffffff;
uint8_t t8 = 0;
printf("%x %d %d\n", b8, b8, sizeof(b8));
printf("%x %d\n", b16, b16);
printf("%x %d\n", b32, b32);
printf("%x %d\n", ub32, ub32);
t8 = t8 - 1;
printf("%x %hhu\n", t8, t8);
errno = 12;
printf("%m\n");
*/
/* printf */
uint8_t u8 = 0xff;
printf("u8=0xff, (%%ld) %ld, (%%lld) %lld, (%%d) %d, (%%hd) %hd, (%%hhd) %hhd\n", u8, u8, u8, u8, u8);
printf("u8=0xff, (%%lu) %lu, (%%llu) %llu, (%%u) %u, (%%hu) %hu, (%%hhu) %hhu\n", u8, u8, u8, u8, u8);
printf("u8=0xff, (%%zu) %zu\n", u8);
printf("u8=0xff, (%%zx) %zx\n", u8);
printf("u8=0xff, (%%zX) %zX\n", u8);
printf("u8=0xff, (%%zd) %zd\n", u8);
printf("u8=0xff, (%%zi) %zi\n", u8);
printf("u8=0xff, (%%08x) %08x\n", u8);
printf("u8=0xff, (%%08d) %08d\n", u8);
printf("\033[1mChoices for %s: \033[0m\n", "test");
printf("Choices for %s:\n", "test");
printf("%s\n", __func__);
printf("%-15s %s\n", "version", "shows the program version");
printf("%15s %s\n", "version", "shows the program version");
printf("*\n");
printf("%06X - 0x%0*" "llX" "\n", 0x2000, 5, 8);
/* convert */
uint8_t us8 = 0xff;
uint8_t tmp = 0;
uint16_t us16 = 0xffff;
uint16_t tmp16 = 0;
uint32_t us32 = 0xffffffff;
uint32_t tmp32 = 0;
uint64_t us64 = 0xffffffffffffffff;
uint64_t tmp64 = 0;
tmp = tmp -1;
printf("tmp, (%%ld) %ld, (%%lld) %lld, (%%d) %d, (%%hd) %hd, (%%hhd) %hhd\n", tmp, tmp, tmp, tmp, tmp);
printf("tmp, (%%lu) %lu, (%%llu) %llu, (%%u) %u, (%%hu) %hu, (%%hhu) %hhu\n", tmp, tmp, tmp, tmp, tmp);
if (us8 == tmp)
printf("equal us8 : tmp\n");
else
printf("not equal us8 : tmp\n");
tmp16 = tmp16 -1;
tmp32 = tmp32 - 1;
tmp64 = tmp64 -1;
if (us16 == tmp16)
printf("equal us16 : tmp\n");
else
printf("not equal us16 : tmp\n");
if (us32 == tmp32)
printf("equal us32 : tmp\n");
else
printf("not equal us32 : tmp\n");
if (us64 == tmp64)
printf("equal us64 : tmp\n");
else
printf("not equal us64 : tmp\n");
//uint32_t temp = 1;
unsigned int temp = 1;
printf("temp = %d, !temp = %d\n", temp, !temp);
temp = 2;
printf("temp = %d, !temp = %d\n", temp, !temp);
temp = 0xf;
printf("temp = %d, !temp = %d\n", temp, !temp);
}