vf小题目，求解

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看来没人回答，结果：s=55
程序运行过程如下：
store 1 to s,i,j .....#首先给s,i,j ，赋值是1 #
do while i<=5 ........#因为i=1，进入循环 #
s=s+i+j ..............#s=3 #
j=5.................. #j=5 #
do while j>1 .........#因j=5，进入内层循环 #
s=s+i+j ..............#s=3+1+5=9 #
j=j-2.................#j=5-2=3 #
enddo ................#因j=3，再回到内层循环 #
do while j>1
s=s+i+j ..............#s=9+1+3=13 #
j=j-2 ................#j=3-2=1 #
enddo ................#因j=1，不再内层循环 #
i=i+2 ................#i=1+2=3 #
enddo ................#因i=3，再回到外层循环 #
do while i<=5
s=s+i+j ..............#s=13+3+1=17 #
j=5
do while j>1 .........#因j=5，再次回到内层循环 #
s=s+i+j ..............#s=17+3+5=25 #
j=j-2 ................#j=5-2=3 #
enddo ................#因j=3，再回到内层循环 #
do while j>1
s=s+i+j ..............#s=25+3+3=31 #
j=j-2 ................#j=3-2=1 #
enddo ...........