![left0UNIVERSITI TUN HUSSEIN ONN MALAYSIA<br />FACULTY OF MECHANICAL AND MANUFACTURING ENGINEERING <br />DAM31303/DTI 2143: COMPUTER PROGRAMMING<br />LAB EXERCISE 6: SELECTION & LOOP <br />Exercise 1:<br />,[object Object],#include<stdio.h><br />#include<conio.h><br />int main()<br />{<br /> double price1, price2 ,price3,price4, price5, price6, price7, totalprice=0;<br /> printf(quot;
Program to calculate the average and total price of the 7 itemsquot;
);<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price1);<br /> totalprice +=price1;<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price2);<br /> totalprice +=price2;<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price3);<br /> totalprice +=price3;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price4);<br /> totalprice +=price4;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price5);<br /> totalprice +=price5;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price6);<br /> totalprice +=price6;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price7);<br /> totalprice +=price7;<br /> printf(quot;
The total price of the item is: RM%0.2lf quot;
, totalprice);<br /> printf(quot;
The average price of the item is: RM%0.2lf quot;
, totalprice/7);<br /> printf(quot;
End of programquot;
);<br /> <br /> getch();<br /> return 0;<br />}<br />1.1 Study program 1.0 carefully, then compile and execute it.<br />,[object Object]](https://image.slidesharecdn.com/dti2143labsheet6-110726164108-phpapp02/85/Dti2143-lab-sheet-6-1-320.jpg)
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Dti2143 lab sheet 6
- 2. Why do you need 7 variables to hold the prices of the items?
- 3. Why is the variable totalprice initialized to 0?
- 4. Identify the set of statements that are repeated many times in the program
- 8. for (int item=7;item>0;item--)e. Modify the program such that it will calculate and print the average and the total prices of 20 items.<br />Exercise 3: Write a C program to draw a symmetrical triangle by using for-loop. The program should be able to produce output as follows: <br />Exercise 4:<br />Write a C programme for Holiday Villa Subang Jaya Business Lounge internet charges that calculates the total charges for internet usage. Operation time: 08:00-22:00 and the charges are as follows:<br />HoursRateFirstRM 3.00Second to FifthRM 2.00Subsequence RM 1.00<br />Allow the user to repeat calculations as many times as needed and enter ‘n’ to stop. The output should similar as follow:<br />