下列程序段的输出结果是【】int? a=1234;float? b=123.456;double? c=12345.54321;

下列程序段的输出结果是【】int? a=1234;float? b=123.456;double? c=12345.54321;printf("%2d,%2.1f,%2.1f",a,b,c);
A、无输出
B、12,123.5,12345.5
C、1234,123.5,12345.5
D、1234,123.4,1234.5
【正确答案】:C