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(Practice) a. Using Figure 2.14 and assuming the variable name rate is assigned to the byte at memory address 159, determine the addresses corresponding to each variable declared in the following statements. Also, fill in the correct number of bytes with the initialization data included in the declaration statements. (Use letters for the characters, not the computer codes that would actually be stored.)
b. Repeat Exercise 9a, but substitute the actual byte patterns that a computer using the ASCII code would use to store characters in the variables ch1, ch2, ch3, and ch4. (Hint: Use Appendix B.)
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Chapter 2 Solutions
C++ for Engineers and Scientists
- (b) For the following C statement, write the corresponding LEGV8 assembly code. Assume that the variables f, g, h, i, and j are assigned to registers X0.X1,X2,X3, and X4, respectively. Assume that the base address of the arrays A and B are in registers X6 and X7, respectively. B[3] = A[il + Alil:arrow_forward1. (Assembly Language Programming) Write a procedure gcd for finding the greatest common divisor (GCD) of two positive integers x and y, which is described in the C code below. int gcd (int x, int y) { if (y 0) == return x; else return gcd (y, x % y); } Assume that x and y are passed to procedure gcd via X4 and X5 and the result is returned in X2. Note that x % y is the remainder of x / y.arrow_forward(Q4) Write a paragraph essay about the history of computer hardware and OS (Operating System). (a total of 25-30 sentences, or 1 and a half pages in length) Your essay must showcase your knowledge of hardware and software (PLEASE APPLY WHAT WE HAVE LEARN IN MS-WORD).arrow_forward
- 1. (Floating-Point Arithmetic). For each of the following numbers,(a) determine whether the number is a 4-digit oating-point number (the number of the FPA4);(b) if yes, write the number in the standard form ±0.d1d2d3d4 × 10n, where d1 is a nonzero digit and n ∈ Z;(c) if no, rst chop and then round the number to a number of the FPA4, written in the standard form:(i) − 0.989067000000001; (ii) − 51.8; (iii) − 900.377050000001; (iv) − 5000.0;(v) − 0.023409; (vi) 2036.0; (vii) 0.01814.arrow_forward[1] ( Show your work. Show hoe you compute memory address by using the effective memory address computation. Assume the following values are stored at the indicated memory addresses and registers: Address Value 0x100 OxFF 0x104 OxAB 0x108 0x13 0x10c 0x11 $0x108 (Zrax) Fill in the following table showing the values for the indicated operands: Operand Value Zrax 0x104 4(%rax) 9(%rax, Xrdx) Register Zrax Zrcx %rdx 260(Xrcx,Xrdx) OxFC(Zrcx, 4) (Zrax, Xrdx, 4) Value 0x100 0x1 0x3arrow_forward(emu8086) Code in Assembly Create a programme which displays any four ASCII characters in ascending order.arrow_forward
- c. (3 Pts) In a certain computer architecture, the content of some registers and memory content currently is as follows. Memory Address Data R1 | 00000004 0000FFFE FO00128A R2 0000FFFE FO00128A 0000FFF0 Next, this computer execute the following instruction. ADDI (0000FFFE), R1 Note: The I in ADDI refers to Indirect. Indirect here deals with the destination address: (0000FFFE). The parentheses are standard for indirect addressing. ADDI means add content of source to content of destination and place result in destination. Given that it is immediately after the instruction above is executed, fill out the contents of registers and memory addresses below. Memory Address Data R1 0000FFFE R2 FO00128Aarrow_forward(c) An electronic rainfall depth measurement device is developed to collect the data from the past 7 days as shown in Table 1 to study the weather condition at UniMAP. Table 1 [Jadual 1] Location: UniMAP Day Rainfall Depth (mm) 5.9 1 2 6.7 3 2.4 7.8 5.2 4 5 1.8 7 3.5 (i) Write a program in C to receive the values of rainfall depth and display the number of days with light rain ( 7.6 mm) from the record in Table 1. (ii) Rewrite the program in (c)(i) to identify and display the day with the lowest value of rainfall depth, the day with the highest value of rainfall depth and the average value of rainfall depth for the past 7 days.arrow_forward)Choose the statement which is incorrect with respect to dynamic memory allocation.a. Memory is allocated in a less structured area of memory, known as heapb. Used for unpredictable memory requirementsc. Execution of the program is faster than that of static memory allocationd. Allocated memory can be changed during the run time of the program based on the requirement of the programarrow_forward
- (System Architecture) One type of authentication is biometric using fingerprint. An Automated Teller Machine (ATM) requires fingerprint instead of PIN on top of the bank card. A user’s card must be registered with the user’s account number (10 digit), name, NRIC (12-digit) and three fingerprint samples of data type bitmap object. For a successful authentication, the correct bank-card provides the user’s account number to the ATM during read. The ATM retrieves fingerprint samples from a remote database. Then, the ATM requests the user to scan his right thumb finger print on an optical scanner. The algorithm authenticates the finger print against any of the three samples. A successful login requires a match of 99% on any one of the three samples. Question: Propose a class diagram. Draw a sequence diagram to illustrate the above sequence of process. Draw a wireframe design of the ATM User Interface (UI).arrow_forwardPart 1(Theory) A-Write C++ statements to accomplish each of the following 1. Display the value of the seventh element of character array f. 2. Input a value into element 4 of single-subscripted floating-point array 3. Initialize each of the 5 elements of singlo-subscripted integer array g to 8. B-Write C++ statement to accomplish each of the following. 4. Assign the sum of x and y to z and increment the value ofx by 1 after the calculation. (Write Single Statement) 5. Decrement the variable x by 1 then subtract it from the variable total. (Write Single Statement) 6. Write four different C++ statements that cach add I to integer variable x. (Write four Statement) C- Write C++ statement to accomplish each of the following. 7. Declare variables sum and x to be of type int. 8. Set variable x to 1. Set variable sum to 0. 9. Add variable x to variable sum and assign the result to variable sum. 10. Print "The sum is: " followed by the value of variable sum. function call declaration,…arrow_forward(C PROGRAM ONLY) 3: Structure with Pointer Create a c program that will ask the user to input item name, price and quantity using structure. Calculate and display the total amount of all quantity. Input 1. Item Name Constraints accept string until \n is encountered 2. price Constraints The input can contain a decimal value 3. quantity Constraints The input must be an integer value Output Enter product name: Whiteboard·MarkerEnter price: 62.75Enter quantity: 10 Product details:Name: Whiteboard MarkerPrice: 62.75Quantity: 10Total Amount: 620.75arrow_forward
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