69,369
社区成员
发帖
与我相关
我的任务
分享
# include <limits.h>
# include <stddef.h>
typedef unsigned long INT32U;
void num_binary (INT32U vari, char * str)
{
for (size_t x = sizeof (INT32U) * CHAR_BIT; x > 0; x --)
* (str ++) = (vari >> x - 1 & 1) + '0';
* str = '\0';
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
int main() {
int i,v;
char bs[33];
char b[33];
char hs[9];
char h[9];
char s[4];
char *e;
// 十进制整数转二进制串;
i=1024;
ltoa(i,b,2);
sprintf(bs,"%032s",b);
printf("i=%d,bs=%s\n",i,bs);
// 十进制整数转十六进制串;
i=1024;
ltoa(i,h,16);
sprintf(hs,"%08s",h);
printf("i=%d,hs=%s\n",i,hs);
// 十六进制字符串转成十进制数
strcpy(hs,"00000400");
sscanf(hs,"%x",&i);
printf("hs=%s,i=%d\n",hs,i);
// 二进制字符串转化为十六进制字符串;
strcpy(bs,"00000000000000000000010000000000");
i=strtol(bs,&e,2);
ltoa(i,h,16);
sprintf(hs,"%08s",h);
printf("bs=%s,hs=%s\n",bs,hs);
// 二进制字符串转化为十进制数;
strcpy(bs,"00000000000000000000010000000000");
i=strtol(bs,&e,2);
printf("bs=%s,i=%d\n",bs,i);
// 十六进制字符串转成二进制串
strcpy(hs,"00000400");
sscanf(hs,"%x",&i);
ltoa(i,b,2);
sprintf(bs,"%032s",b);
printf("hs=%s,bs=%s\n",hs,bs);
// ASC\GBK字符串转十六进制串
strcpy(s,"a汉");
i=0;
while (1) {
if (0==s[i]) break;
sprintf(hs+i*2,"%02X",(unsigned char)s[i]);
i++;
}
setlocale(LC_ALL,"chs");
printf("s=%s,hs=%s\n",s,hs);
// 十六进制字符串转成汉字(GBK)及字符(ASC)
strcpy(hs,"61BABA");
i=0;
while (1) {
if (1!=sscanf(hs+i*2,"%2x",&v)) break;
s[i]=(char)v;
i++;
}
s[i]=0;
printf("hs=%s,s=%s\n",hs,s);
return 0;
}
//i=1024,bs=00000000000000000000010000000000
//i=1024,hs=00000400
//hs=00000400,i=1024
//bs=00000000000000000000010000000000,hs=00000400
//bs=00000000000000000000010000000000,i=1024
//hs=00000400,bs=00000000000000000000010000000000
//s=a汉,hs=61BABA
//hs=61BABA,s=a汉
#include <stdio.h>
#include <stddef.h>
typedef unsigned long INT32U;
void num_binary (INT32U vari, char *str)
{
INT32U temp = 1;
char c;
int i = sizeof(vari) * 8;
int m = 0;
printf("lenght of INT32U:%d\n",i);
for(m = 0; m < i; m++){
//printf("m = %d\n",m);
//c = (vari & temp) + '0';
//printf("c = %c\n",c);
int n = 0;
if(vari & temp)
n = 1;
*(str+m) = (char) ( n + '0');
temp = temp << 1;
}
*(str+i) = '\0';
}
int main(void)
{
char *str = NULL;
int in;
str = (char*)malloc(100*sizeof(char));
INT32U i = 8858;
num_binary(i, str);
printf("i = %d is %s\n",i, str);
scanf("%d",&in);
num_binary(in,str);
printf("in = %d is %s\n",in, str);
free(str);
// printf("str = %.8s %.8s %.8s %.8s\n", *str,*str+8, *str+16, *str+32);
}
typedef unsigned int INT32U;
void Num_Binary(INT32U vari, char *str)
{
int i;
//temp = vari;
for (i = 31; i != -1; i--)
{
*(str + i) = (vari & 1) + '0';
vari = vari >> 1;
//temp2 = vari;
}
*(str + 32) = 0;
}
int main(void)
{
INT32U i = 32;
char str[32];
Num_Binary(i, str);
printf("str=%.8s %.8s %.8s %.8s\n", str, str + 8, str + 16, str + 24);
return 0;
}
//00000000 00000000 00000000 00100000
# include <limits.h>
# include <stddef.h>
typedef unsigned long INT32U;
void num_binary (INT32U vari, char * str)
{
union {INT32U v; unsigned c:1;} u;
for (size_t x = 0; x < sizeof (INT32U) * CHAR_BIT; x ++)
* (str ++) = (u.v = vari >> x, u.c + '0');
* str = '\0';
}