C/C++进制间的相互转换
2016-01-06 15:24
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#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
转自
http://bbs.csdn.net/topics/390562178?page=1#post-395383165
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