请帮我试一下这个printf问题，我那结果好象不对

unsigned char a;
unsigned int b;
unsigned long c;
a=16;
b=4096;
c=268435456;
printf ("a= %u \n",a);
printf ("b= %u \n",b);
printf ("c= %u \n",c);

[[it] 本帖最后由 woojinabc 于 2008-6-20 15:18 编辑 [/it]]

我试了，结果也不对，请帮我试一下，在TC，VC下结果对不对

unsigned char a;
unsigned int b;
unsigned long c;
a=16;
b=4096;
c=268435456;
printf ("a= %u \n",int(a));
printf ("b= %hu \n",b);
printf ("c= %lu \n",c);