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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
- I need the correct answer. Don't give wrong.arrow_forward1. (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(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_forward
- 4. (16 pts.) Pseudoinstructions are not part of the MIPS instruction set but often appear in MIPS programs. For each pseudoinstruction in the following table, produce a minimal sequence of actual MIPS instructions to accomplish the same thing. You may need to use Sat for some of the sequences. In the following table, "imm" refers to a specific number that requires 32 bits to represent. Pseoduinstructions move $t1, $12 clear Sto beq St1, imm, L bge $15, $13, L What it accomplishes $t1 = $12 $t0=0 == If ($t1 big) go to L If ($t5 >= $13) go to Larrow_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_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
- 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_forward3. (15 pts.) Consider the following fragment of C code: for (i=0; i<=100; i=i+1) a [i] = b[i] + c; Assume that a and b are arrays of words and that the base address of a is in $a0 and the base address of b is in $a1. Register $t0 is associated with variable I and register $50 with the value of c. You may also assume that any address constants you need are available to be loaded from memory. (1) (10 pts.) Write the code for MIPS. (2) (5 pts.) How many instructions are executed during the running of this code if there are no array out-of-bounds exceptions thrown? (3) How many memory data references will be made during execution?arrow_forward
- (C PROGRAMMING ONLY) 3. How Much Is The House?by CodeChum Admin There's this house I want to buy just right around the corner. I know its address but I don't know its value. Can you please help me determine it? Instructions: In the code editor, you are provided with an initial code which has main() function.In the main(), the user is asked for an integer input and then its address is assigned to a pointer variable (see line 9)Your task is to print the value of the pointer variable using the dereferencing operator.Input 1. An integer Output Enter n: 5Value of *ptr = 5arrow_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[Peter Sorger’s] bioengineering lab produces a terabyte of data in a typical month. (a) At what rate in bytes per minute is the lab producing data? Write your answer with the appropriate metric prefix and the appropriate level of precision. (b) If the lab has been producing data from the time the article appeared to the present, how much has accumulated now? (c) When will a petabyte of data have accumulated? Do you believe your prediction? (d) When will an exabyte of data have accumulated?arrow_forward
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