Decimal conversion to 16 binary, 16 binary to 2 binary

#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;//decimal integer to binary string; i=1024;    Ltoa (i,b,2);    sprintf (BS, "%032s", b);    printf ("i=%d,bs=%s\n", i,bs);//decimal integer to hexadecimal string; i=1024;    Ltoa (i,h,16);    sprintf (HS, "%08s", h);    printf ("i=%d,hs=%s\n", i,hs);//hexadecimal string converted to decimal number strcpy (HS, "00000400");    SSCANF (HS, "%x", &i);    printf ("hs=%s,i=%d\n", hs,i);//binary string converted to hexadecimal string; strcpy (BS, "00000000000000000000010000000000");    I=strtol (bs,&e,2);    Ltoa (i,h,16);    sprintf (HS, "%08s", h);    printf ("bs=%s,hs=%s\n", bs,hs);//binary string converted to decimal number; strcpy (BS, "00000000000000000000010000000000");    I=strtol (bs,&e,2);    printf ("bs=%s,i=%d\n", bs,i);//hexadecimal string is converted to binary string 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 string to hex string strcpy (S, "A-han");   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);

The hexadecimal string is converted to kanji (GBK) and the character (ASC) strcpy (HS, "61BABA");    i=0;        while (1) {if (1!=sscanf (hs+i*2, "%2x", &v)) is 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 Han, hs=61baba//hs=61baba,s=a han------solution--------------------#include < stdio.h>union decompose{int integer;struct{unsigned int hex0:4;unsigned int hex1:4;unsigned int hex2:4;unsigned i NT hex3:4;unsigned int hex4:4;unsigned int hex5:4;unsigned int hex6:4;unsigned int hex7:4;} hex4;};/ * This macro definition cannot be used for loops, that is, n cannot be a variable, only can be a number * Therefore, it is more suitable to get bit state or byte state/#define GETHEX (x, N) ((union Decompose) {. Integer = x}). hex4.hex# #n ) void Test_getx (int tmp) {printf ("%x", Gethex (tmp, 0));p rintf ("%x", Gethex (TMP, 1));p rintf ("%x", Gethex (TMP, 2));p rintf ("%x", GETHEX (TMP, 3));p rintf ("%x", Gethex (TMP, 4));p rintf ("%x", Gethex (TMP, 5));p rintf ("%x", Gethex (TMP, 6));p rintf ("%x\n", Gethex (TMP, 7));} int main () {test_getx (+); return 0;}

MFC 16-in-Turn 2-binary

16 Go to 10

16 to 10 binary int cciecclientsimulator12dlg::hextodec (char *s) {char *p = s;//empty string returns 0. if (*p = = ') return 0;//ignores the beginning of the ' 0 ' character while (*p = = ' 0 ') p++;int Dec = 0;char c;//Loop Until the end of the string. while (c = *p++) {//dec by 16dec <<= 4;//numeric characters. if (c >= ' 0 ' && C <= ' 9 ') {Dec + = c-' 0 '; continue;} Lowercase abcdef. if (c >= ' a ' && C <= ' F ') {dec + = c-' a ' + 10;continue;} Uppercase ABCdef. if (c >= ' a ' && C <= ' F ') {dec + = c-' A ' + 10;continue;} Does not end in any of the IF statements, the description encounters an illegal character. return-1;} The normal end loop returns a 10 binary integer value. return Dec;}

10 Go to 2

UINT Cciecclientsimulator12dlg::to2 (int n) {int r=0;//double r=0;double b =10;int shang,yushu;shang=n;int i=0;while ( shang!=0) {Yushu=shang%2;r=r+pow (b,i) *YUSHU;I++;SHANG=SHANG/2;} return r;}

Decimal conversion to 16 binary, 16 binary to 2 binary