设fp为指向某二进制文件的指针，且已读到此文件末尾，则函数feof(fp)的返回值为 ( )。

A．switch(x)
case 1.0: printf("*\n");
case 2.0: printf(" * * \n" );
B．switch((iht)x);
case 1: printf(" * \n" );
case 2: printf(" * * \n" );

C．switch(a +b)
case 1: printf(" * \n" );
case 2 + 1: printf(" * * \n" );

D．switch(a +b)
case 1: pfintf(" * \n" );
case c: pfintf(" * * \n");

A．#include ＜stdio.h＞
main( );
/* programmlng* /
printf( "programming! \n" );

B．#include ＜stdio.h＞
main( )
/*/programming
printf("programming! \n");

C．#include ＜stdio.h＞
main( )
/*programming* /
printf( "programming! \n" );

D．include ＜stdio.h＞
main ( )
/*/* programming*/*/
printf( "programming! \n" );