user-0 提问: c++中，设计一个程序，可用于进行2,8,10,16进制的转换

回复:
user: user-1
content: 引用 4 楼 zhao4zhong1 的回复:#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   谢谢老师分享！！！

user: user-2
content: 晚上之前给你结果哈

user: user-2
content: 你们函数或者数组学了吗

user: user-3
content: 首先要明白，进制，只是计数进位的规则，进制的转化并不会影响数的实际值。  比如十进制16，转化为16进制就是0x10，不过这只是字面上的改变，实际上其内存中的值是没有任何改变的。  由此，你说的额转化，也只是对显示进行转化，那么有以下方式可以简单实现：  例如有： int n = 15; 现在要将其进行2、8、10、16进制的显示： #include <iostream> #include <bitset> using namespace std;  int main() {     int n = 15;      cout << bitset<4>(n) << endl;   // 二进制显示     cout << oct << n << endl;           // 8进制显示     cout << dec << n << endl;         // 10进制显示     cout << hex << n << endl;          // 16进制显示      return 0; }  值得注意的是二进制显示，bitset后面的尖括号表示二进制的位数，这个位数要给够，否则显示出来的数会被截断导致错误

user: user-4
content: #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

user: user-5
content: http://download.csdn.net/my 供参考

user: user-2
content: 你们学到哪里了呢