// enter any type data to show Binary.c
// 输入任意类型数据转换成二进制并显示
// version: 2.0
// date: 2014.6.13
// BUG提交: yinjunwithu@outlook.com
// 缺陷: 请勿使用vc 6.0编译 因为不支持long long及unsigned long long类型
#define _CRT_SECURE_NO_WARNINGS // Microsoft Visual Studio 2013编译器请添加本行
#include <stdio.h>
#include <limits.h> /* CHAR_BIT所属h文件 CHAR_BIT = 8 */
#define MAX 11 // 最大选项数
#define EATLINE while (getchar() != '\n') continue // 应输入数字但实际输入字母则剔除错误输入
#define SHOW_ERROR(str) printf("wrong %s number!\n", str) // 显示输入错误语句
int menu(void);
void convert(const unsigned char * const ch, const char size);
int main(void)
{
union
{
long long value;
// 用unsigned类型是为了与mask类型一致
unsigned char array[sizeof (long long)];
}ll_data;
union
{
unsigned long long value;
// 用unsigned类型是为了与mask类型一致
unsigned char array[sizeof (unsigned long long)];
}llu_data;
union
{
float value;
// 用unsigned类型是为了与mask类型一致
unsigned char array[sizeof (float)];
} f_data;
union
{
double value;
// 用unsigned类型是为了与mask类型一致
unsigned char array[sizeof (double)];
} d_data;
union
{
long double value;
// 用unsigned类型是为了与mask类型一致
unsigned char array[sizeof (long double)];
} ld_data;
int select; // 选项
// while ((select = menu()) != 0)
while (select = menu())
{
switch (select)
{
case 1: // char
printf("Please input a char number (%d to %d) : ", CHAR_MIN, CHAR_MAX);
while (scanf("%lld", &ll_data.value) != 1)
{
EATLINE;
SHOW_ERROR("char");
printf("Please input a char number (%d to %d) : ", CHAR_MIN, CHAR_MAX);
}
printf("\n%lld is in %#p\nBinary : ", ll_data.value, &ll_data.value);
convert(ll_data.array, sizeof(char));
break;
case 2: // unsigned char
printf("Please input a unsigned char number (0 to %u) : ", UCHAR_MAX);
while (scanf("%llu", &llu_data.value) != 1)
{
EATLINE;
SHOW_ERROR("unsigned char");
printf("Please input a unsigned char number (0 to %u) : ", UCHAR_MAX);
}
printf("\n%llu is in %#p\nBinary : ", llu_data.value, &llu_data.value);
convert(llu_data.array, sizeof(unsigned char));
break;
case 3: // short
printf("Please input a short number (%d to %d) : ", SHRT_MIN, SHRT_MAX);
while (scanf("%lld", &ll_data.value) != 1)
{
EATLINE;
SHOW_ERROR("short");
printf("Please input a short number (%d to %d) : ", SHRT_MIN, SHRT_MAX);
}
printf("\n%lld is in %#p\nBinary : ", ll_data.value, &ll_data.value);
convert(ll_data.array, sizeof(short));
break;
case 4: // unsigned short
printf("Please input a unsigned short number (0 to %u) : ", USHRT_MAX);
while (scanf("%llu", &llu_data.value) != 1)
{
EATLINE;
SHOW_ERROR("unsigned short");
printf("Please input a unsigned short number (0 to %u) : ", USHRT_MAX);
}
printf("\n%llu is in %#p\nBinary : ", llu_data.value, &llu_data.value);
convert(llu_data.array, sizeof(unsigned short));
break;
case 5: // int
printf("Please input a int number (%d to %d) : ", INT_MIN, INT_MAX);
while (scanf("%lld", &ll_data.value) != 1)
{
EATLINE;
SHOW_ERROR("int");
printf("Please input a int number (%d to %d) : ", INT_MIN, INT_MAX);
}
printf("\n%lld is in %#p\nBinary : ", ll_data.value, &ll_data.value);
convert(ll_data.array, sizeof(int));
break;
case 6: // unsigned int
printf("Please input a unsigned int number (0 to %u) : ", UINT_MAX);
while (scanf("%llu", &llu_data.value) != 1)
{
EATLINE;
SHOW_ERROR("unsigned int");
printf("Please input a unsigned int number (0 to %u) : ", UINT_MAX);
}
printf("\n%llu is in %#p\nBinary : ", llu_data.value, &llu_data.value);
convert(llu_data.array, sizeof(unsigned int));
break;
case 7: // long long
printf("Please input a long long number (%lld to %lld) : ", LLONG_MIN, LLONG_MAX);
while (scanf("%lld", &ll_data.value) != 1)
{
EATLINE;
SHOW_ERROR("long long");
printf("Please input a long long number (%lld to %lld) : ", LLONG_MIN, LLONG_MAX);
}
printf("\n%lld is in %#p\nBinary : ", ll_data.value, &ll_data.value);
convert(ll_data.array, sizeof(long long));
break;
case 8: // unsigned long long
printf("Please input a unsigned long long number (0 to %llu) : ", ULLONG_MAX);
while (scanf("%llu", &llu_data.value) != 1)
{
EATLINE;
SHOW_ERROR("unsigned long long");
printf("Please input a unsigned long long number (0 to %llu) : ", ULLONG_MAX);
}
printf("\n%llu is in %#p\nBinary : ", llu_data.value, &llu_data.value);
convert(llu_data.array, sizeof(unsigned long long));
break;
case 9: // float
printf("Please input a float number : ");
while (scanf("%f", &f_data.value) != 1)
{
EATLINE;
SHOW_ERROR("float");
printf("Please input a float number : ");
}
printf("\n%f is in %#p\nBinary : ", f_data.value, &f_data.value);
convert(f_data.array, sizeof(float));
break;
case 10: // double
printf("Please input a double number : ");
while (scanf("%lf", &d_data.value) != 1)
{
EATLINE;
SHOW_ERROR("double");
printf("Please input a double number : ");
}
printf("\n%lf is in %#p\nBinary : ", d_data.value, &d_data.value);
convert(d_data.array, sizeof(double));
break;
case 11: // long double
printf("Please input a long double number : ");
while (scanf("%lf", &ld_data.value) != 1)
{
EATLINE;
SHOW_ERROR("long double");
printf("Please input a long double number : ");
}
printf("\n%lf is in %#p\nBinary : ", ld_data.value, &ld_data.value);
convert(ld_data.array, sizeof(long double));
break;
default:
break;
}
}
printf("Bye.\n");
getch();
return 0;
}
int menu(void)
{
int code, status;
printf("0\texit\n");
printf("1\tchar\n");
printf("2\tunsigned char\n");
printf("3\tshort\n");
printf("4\tunsigned short\n");
printf("5\tint\n");
printf("6\tunsigned int\n");
printf("7\tlong long\n");
printf("8\tunsigned long long\n");
printf("9\tfloat\n");
printf("10\tdouble\n");
printf("11\tlong double\n");
printf("Please input the number to select : ");
while ((status = scanf("%d", &code)) != 1 || (code > MAX || code < 0))
{
if (status != 1)
scanf("%*s");
printf("input an integer from 0 to %d,please\n", MAX);
}
return code;
}
void convert(const unsigned char * const ch, const char size)
{
char i, j;
unsigned char mask; // 掩码用unsigned类型是为了无符号数右移以0填充
for (i = size - 1; i >= 0; --i)
{
mask = 0x80; // 1000 0000B
for (j = 0; j < CHAR_BIT; ++j)
{
(ch[i] & mask) == mask ? putchar('1') : putchar('0');
// mask = mask >> 1;
mask >>= 1; // 右移1位
// 每输出8位2进制就空一格
if (j % CHAR_BIT == 7)
putchar(' ');
}
}
printf("\n\n");
for (i = 0; i < size; ++i)
{
printf("%#p : \t", ch + i);
mask = 0x80; // 1000 0000B
for (j = 0; j < CHAR_BIT; ++j)
{
(ch[i] & mask) == mask ? putchar('1') : putchar('0');
// mask = mask >> 1;
mask >>= 1; // 右移1位
// 每输出8位2进制就空一格
if (j % CHAR_BIT == 7)
putchar(' ');
}
putchar('\n');
}
putchar('\n');
}
// 其实输入整数的都是long long或unsigned long long数据
// 只不过显示的时候都被截断了
// 自我感觉写得不好 应该还能优化
总结：左侧为内存高地址，右侧为低地址 数据首地址为最末字节的地址 见图
论C/C++数据在内存中的二进制存放形式,布布扣,bubuko.com
原文地址：http://blog.csdn.net/u010518429/article/details/30332237
