1. Exercise (1)

2. Example:
Using Pseudo code, Write suitable algorithm:
Calculate and print the average temperature, readings for the degrees as the following T1, T2, T3.
Input T1, T2, T3
avg= (T1 + T2 + T3)/3
Print avg
Input T1, T2, T3
Sum = (T1 + T2 + T3)
Avg = sum/3
Print avg

3. Flow chart Start or Stop Program Input or Output
Process, Calculate, Storage
Used to express logical operations or operations report (Condition)
Arrows determine the direction of the program's progress
Connection

4. Flow chart start Input : stop Sum = T1+T2+T3 Avg = sum/3 Example :
Using flow chart, Write suitable algorithm:
Calculate and print the average temperature for the following readings T1, T2, T3.
start
Input
T1, T2, T3
Input :
T1, T2, T3
Processing :
Sum = T1+T2+T3
Avg = sum/3
Output:
Sum = T1+T2+T3
Avg = sum/3
Print avg
stop

5. Note: (if X=0 enter value of X again)
Using pseudo code and flow chart to write an algorithm. Enter number (X) and then find and print the value (Y), as shown in the following equation:
Y=(X-2)/X
Note: (if X=0 enter value of X again)
Flow Chart
start
Input X
If X=0
Pseudo code
input X
process if x=0 Re-enter the new value of x because you can not divide by 0 “
Y=(X-2)/X
output Y
yes No
Y=(X-2)/X
Print Y
stop

6. Flow chart Example: start Stop
Using flow chart, Write suitable algorithm:
Calculate and print the average temperature. Readings as the following T1, T2, T3.
IF the average is greater than 15 print the average, else print the weather is cold.
start
input
T1, T2, T3
Sum= T1+T2+T3
Start
Input T1,T2,T3
Sum = T1+T2+T3
Avg = sum/3
If avg > 15 then
Print avg
Else
Print “cold”
End if
end
Avg = sum/3 No
Yes
avg > 15
Print “cold”
Print avg
Stop

7. Discuss
Write an algorithm using pseudo code and flow chart for the introduction of 3 degrees and find the average temperature and print the "cool air“ if temperature less than 15, Print "moderate air” if temperature between 15 and 25, and print “hot air” if the temperature not verify the previous conditions.

8. Answer : End Yes No Yes Print cool No Print moderate Print hot
If avg<15
Yes No
If avg<25
Yes
Print cool No
Print hot
Print moderate
End

9. Using pseudo code and flow chart to write an algorithm to calculate the area and perimeter of ​​a rectangle. Note: the area of ​​the rectangle = length × width.
Perimeter = 2*(length+width)

10. Using pseudo code and flow chart to write an algorithm to calculate and print the area of a right-angled triangle .
The base of the triangle = a
The height of triangle= b
Equation of area= (1/2)*a*b

11. Write a program using the pseudo code and flow chart to find the area of ​​a circle which radius R print it. Note: The area of ​​a circle is equal to π * R2, where π is a constant value of approximately 3.14.
flow chart
start
Input r
π × r × A= r
Print A
End
Input R
Process
Π = 3.14
A= π × R × R
output
Print A
End
Pseudo code
π = 3.14

12. Using the methods (pseudo code and flow chart), we need to find and print the vicinity of the football stadium, and determine whether international (greater than or equal to 600 m) or local (less so), Note: The perimeter of the rectangle is equal to (length + width) × 2 .
flow chart
C= 2* (L+W)
start
Input L,W
Print International
End
Start
Input L , W
C= 2× ( L + W)
If c ≥ 600 then
Print “ international”
Else
Print “ local”
End if
print c
End No
If C>=600
Yes
Print Local

13. Formulate resolve the matter to find the zakaah and that if you know money saver and you know that zakaah = × money saver, provided the account of zakaah money if it exceeds 1000 SR
Flow chart
start
Pseudo code
Input
money m
Process
If m>1000 calculate zakaah else do not calculate zakaah
zakaah=0.025*money
Output
print zakaah
Input M
M>1000 no
yes
K=M*0.025
Print k
stop

14. Formulate a solution to print the odd numbers from 1 to 49 ?
Pseudo code
Output: print output from 1 to 49
Input: no input
Process: transfer from odd number to odd number
no=1
Print no
no=no+2
If no>50 then stop else go to step (2)
Flow chart
start
No=1
Print No
No=No+2 no
No>50
yes
stop

15. Write a program that accept an integer from the user and print it is Positive or Negative number.

16. Write a program that accept an integer from the user and test the number . If it is positive print Positive, if it is negative print Negative if equal zero print equal zero.

17. start
Use flow chart to write algorithm. Read an integer from the user and test then number . If it is positive print Positive, if it is negative print Negative if equal zero print equal zero.
Enter number (n)
yes
n>0
Print “positive” No
yes
N<0
Print “negative” No
print “equal zero”
end