设有 static char str[]="Beijing"； 则执行 printf("%d\n"，strlen(strcpy(str,"China"))); 后的输出结果为_______。A．5B．7C．12D．14
设有 static char str[]="Beijing"； 则执行 printf("%d\n"，strlen(strcpy(str,"China"))); 后的输出结果为_______。
A．5
B．7
C．12
D．14
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