单选题：以下程序运行后的输出结果是#includeintmain(){inta;intc=;floatf=.;doublex;a=f/=c*=(x=.);printf(“%d，%d，%.f，%.fn”，a，c，f，x);return;}A，，.，.B，，，.C，，.，.D，，.，.