include<stdi0.h>
voidmain( )
{FILE*pf;
char*s1="China",*s2="Beijing";
pf=fopen("abc.dat","wb+");
fwrite(s2,7,1,pf);
rewind(pf);/*文件位置指针回到文件开头*/
fwrite(s1,5,1,pf);
fclose(pf);
}
以上程序执行后abc.dat文件的内容是( )。
A.China
B.Chinang
C.ChinaBeijing
D.BeijingChina
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