C++学習ノート:sizeofでintタイプが何バイトを占有しているか判断しない

#include <stdio.h>

#include <string.h>



char *change(int val, int base, char *retbuf)

{

    static const char *str = "0123456789ABCDEF";

    char *p;

    char buf[15];



    p = buf+14;

    *p = 0;



    do { *--p = str[val % base]; } while( val /= base );

    strcpy(retbuf,p);

    return retbuf;

}



int main()

{



     int i = 1;



     char binbuf[32];

     printf("%s  %d
", change(i, 2, binbuf), i);



     int sum = 0;

     while(0 != i)

     {

          sum++;

          i = i<<1;

          printf("%s  %d
", change(i, 2, binbuf), i);

     }

    

     printf("sum = %d
", sum);



}