进制转换

为什么80%的码农都做不了架构师？>>>   

#include <stdio.h>
#include <stdlib.h>

char *baseconv(unsigned int num, int base)
{
   static char retbuf[33];
   char *p = NULL;
   
   if (base < 2 || base > 16)
    return NULL;
   
   p = &retbuf[sizeof(retbuf)-1];
   *p = '\0';

   do {
      *--p = "0123456789ABCDEF"[num % base];
      num /= base;   
   } while(num != 0);

   return p; 
}

int main(int argc, char *argv[])
{
   int i = 0;
   for (i = 9999; i <= 9999; i++) {
     char *ptr = baseconv(i, 2);
     printf("%s\n", ptr);
   }
   return 0;
}
 

转载于:https://my.oschina.net/tsh/blog/713018