同志们帮我看看 这段代码有什么问题，为什么不能编译

#include<stdio.h>
struct a
{
int b;
char c;
float d;
char e[10];
};
struct a aa={1000,'L',100.3,"kenny"};
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
struct b
{
int f;
struct a ff;
char g[20];
};
struct b bb={2,{2000,'k',500.4,"kitty"},"libozhang"};

void main(void)
{
printf("f=%d\n,ff.b=%d\n,ff.c=%c\n,ff.d=%d\n,ff.e=%s\n,g=%s\n",bb.f,bb.ff.b,bb.ff.c,bb.ff.d,bb.ff.e,bb.g,);
}

谢谢楼上的两位大哥， 结构体内嵌套结构体这样附值有问题吗？struct b bb={2,{2000,'k',500.4,"kitty"},"libozhang"};