Compute the weakest precondition for each of the following statements based on their postconditions. b= 2*a + 3*b - 1; a = 2*b {a >= 2} if ( x==4) x = y /2+3; else x = y / 2; {x > 1}
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- Compute the weakest precondition for each of the following statements based on their postconditions. 1. b= 2*a + 3*b 1; a = 2*b {a >= 2}1-Compute the weakest precondition for the following statements A. x = 2 * (y + 2*x); y=3*x-6 {y > 9} B. if (x >y) y=6*x+ 2 else y= 3 *x+9; {y > 2}Void Do1 (int: &, a. int &b) { a = 5; a = a + b; b = a + 2; } Int main() { Int x = 10; Do1 (x,x); Cout << x << endl; } The output of this program is
- Question 13 In C programming, construct an expression to express the following test condition: Tests that str1 is not equal to "xyz" and the length of str1 is less than or equal to 3not handwritten 4-Compute the weakest precondition for the following statements A. A. x = 8x +( 2 y + 4x); y=4*x+ 4 {y > 16} B. if (x > y) y=2*x+ 4 else y= 6 * x+3; {y > 3}i cant use static void Main(string[] args) for this assignment for C# this is what I have to work with using System; using static System.Console; class GuessingGame { static void Main() { // Write your main here } } This problem relies on the generation of a random number. You can create a random number that is at least min but less than max using the following statements: Random ranNumberGenerator = new Random();int randomNumber;randomNumber = ranNumberGenerator.Next(min, max); Write a program named GuessingGame that generates a random number between 1 and 10. (In other words, in the example above, min is 1 and max is 11.) Ask a user to guess the random number, then display the random number and a message indicating whether the user’s guess was too high, too low, or correct.
- T/F 2. In Java, only if and if-else expressions are used in selection statements.In c void f (int *p, int * const q) { p=q *p=3; *p=4; } int i = 1, j =2; int main(){ f(&i, &j); printf("%d %d",i,j); return 0; } a. The program prints 1 2 and terminates b. the program prints 1 3 and 0 c. the program prints 1 4 and terminates d. the program prints 3 4 and terminates e. the program has compiler errorConsider the following code (with line numbers): 1 typedef struct_lock_t (int flag; } lock_t; 2 4 6 7 30 11 15 void init (lock_t *mutex) { } // 0-> lock is available, 1 -> held mutex->flag = 0; void lock (lock_t *mutex) ( while (mutex->flag == 1) // TEST the flag ; // spin-wait (do nothing) mutex-> flag = 1; } void unlock (lock_t *mutex) { mutex->flag = 0; // now SET it! This code is defective in that it allows two threads to enter a critical section at the same time. Please give me a sequence of operations where this might occur.
- Using the following description, please replace the return line in C code; /* * logicalShift: logical shift x to the right by n, * where 0 <= n <= 31 * Examples: * logicalShift(0xFFFFFFFF,0) = 0xFFFFFFFF * logicalShift(0xFFFFFFFF,1) = 0x7FFFFFFF * logicalShift(0xFFFFFFFF,2) = 0x3FFFFFFF * logicalShift(0xFFFFFFFF,3) = 0x1FFFFFFF * logicalShift(0xFFFFFFFF,4) = 0x0FFFFFFF * logicalShift(0xFFFFFFFF,8) = 0x00FFFFFF * logicalShift(0xFFFFFFFF,12) = 0x000FFFFF * Legal ops: ! ~ & ^ | + << >> * Max ops: 20 * Rating: 3 * Hints/notes: * */ int logicalShift(int x, int n) { return 2 } You cannot: 1. Use any control constructs such as if, do, while, for, switch, etc. 2. Define or use any macros. 3. Define any additional functions in this file. 4. Call any functions. 5. Use any other operations, such as &&, ||, -, or ?:, not listed in the the "Legal ops" list for the function. 6. Use any form of casting. 7. Use any data type other than int.Assignment Write a program in C that converts temperatures between Fahrenheit, Celsius, and Kelvin. Functional Requirements • MUST correctly convert temperatures between scales • MUST read input by prompting the user Nonfunctional Requirements • MUST compile without warnings and errors • MUST print error message "Invalid temperature scale" on invalid input • MUST return 0 on success • MUST return non-0 value on failure Sample run $ ./temp Enter input temperature: 18c 18.00 C converts to: 64.40 F 291.15 Κ The conversion formulas are listed below: Celsius = (Fahrenheit - 32) / 1.8 Kelvin = Celcius + 273.15Write C assignment statements for the following: a. Assign a value of 0 to a variable called between if n is less than -k or greater than +k; otherwise, assign 1. b. Assign a value of 1 to a variable called divisor if digit is a divisor of num; otherwise, assign a value of 0. c. Assign a value of 1 to a variable called lowercase if ch is a lowercase letter; otherwise, assign a value of 0.