下列程序段的输出结果是() CLEAR STORE 10 TO A STORE
题型:单项选择题
问题:
下列程序段的输出结果是()
CLEAR
STORE 10 TO A
STORE 20 TO B
SET UDFPARMS TO REFERENCE
DO SWAP WITH A,(B)
A,B
PROCEDURE SWAP
PARAMETERS Xl,X2
TEMP=X1
X1=X2
X2=TEMP
ENDPROC
A. 10 20
B. 20 20
C. 20 10
D. 10 10