18. 7
start
Input ID
Name,X
Flowchart
X >= 80
Memory
>>>
80-100
A
7079
B
60-69
C
50-59
D
<
50
F
Grade = 'A'
no
X >= 70
ID
Name
yes
yes
Grade = 'B'
no
…
X >= 60
no
X
Grade
…
X >= 50
no
Grade = 'F'
Print Grade
end
yes
yes
Grade = 'C'
Grade = 'D'
21. (
)
(
I = 1, 2, 3,1 , 100)
…
10
1
1
0
start
I = 1, 2, 3, ..., 99,
3
100
1
I=1
I=1
I=1
while I<=100
00I
I=
+1
yes
Print I
I = I+1
no
end
22. Flowchart
(
while)
1+2+...+100
Memory
I
SUM
I = 1, 2,
SUM = 3, ..., 100
start
1+2+3+...+100
3
I=1
I=1
00
I=I+
SUM 1 SUM
SUM
SUM
=0
+I
…
I=1
SUM = 0
while I<100
yes
SUM = SUM+I
I = I+1
no
Print SUM
end
27. 11
Flowchart
Memory
1x2x...x10
I = 1, 2, 3, ..., 10
MUL = 1x2x3x...x10
start
I
MUL
3
I=1
I=1
I=I
0
+1
for
…
MUL = 1
for I=1 to 10
yes
MUL = MUL x I
no
Print MUL
end
28. 12
Flowchart
T(
T=2)
Txi
Memory
T
i
R
i=1, 2, …, 12,
start
Input T
for i=1 to 12
i <=12
…
R=Txi
Print T, i, R
i > 12
end
RR=
TxI =
2x1=2
2x2=4
2x3=6
2x4=8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
2 x10 = 20
2 x11 = 22
2 x12 = 24