Compute the weakest preconditions of the following statements for the given postconditions. One can assume that all variables are integers.
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Compute the weakest preconditions of the following statements for the given postconditions. One can assume that all variables are integers.
if (b > 0)
a = 4*b - 10;
else
a = b + 172;
{ a > 0 }
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- Compute the weakest precondition for each of the following assignment statements and postconditions. x = 2 * y -5; y = x + 2; {y < 2}Please write Java program for following statementCompute the weakest precondition for each of the following sequencesof assignment statements and their postconditions:1. a = 2 * b + 1;b = a - 3{b < 0}2. a = 3 * (2 * b + a);b = 2 * a - 1{b > 5}
- (Practice) Write C++ statements for the following: a.b=sinxcosxb.b=sin2xcos2xc.area=( cbsina)/2d.c= a 2 + b 2 e.p= | mn|f.sum= a( r n 1) r13 5. Say for each of the following sets of statements if they are consistent or inconsistent. A.G Ↄ H / H Ↄ J / J Ↄ K/ K Ↄ ~G b. P ≡ Q / Q v P / P Ↄ X / Q Ↄ ~P c. Z Ↄ [(P ● R) v (L ● P)] / ~P Ↄ ~Z / L Ↄ~ RConsider the following declarations. In each case, write the English name of the type of x.Example: double *x;Answer: pointer-to-double (a) int *x[];(b) int (*x)[];(c) double **x;(d) unsigned long int (*x[])[n];
- Solve the following questions: a)Solve the following postfix expressions i)2 3 + 1 - ii)3 4 - 10 + 7 2 3 * - 9 * /a) Convert the following infix to postfix expressions i)2 * 3 - 5 / 2 + 4 ii)1 * 2 * 3 * 4State the order of evaluation of the operators in each of the following Java statements, and show the value of x after each statement is performed: a) int x =7+3 *6/2-1; b) int x =2% 2+2*2-2/2;According to the assignment rule, what should be the precondition in the following program segment?{precondition}x = x − 2{x = y}
- Write the following compound statement in terms of the simple statements p, q, and r. "I go to office hours and ask questions, and my professor does not remember me." p: I go to office hours. q: I ask questions. r: My professor remembers me.. Write a negation for each of the following statements: (a) The variable S is undeclared and the data are out of order. (b) The variable S is undeclared or the data are out of order. (c) If Al was with Bob on the first, then Al is innocent. (d) −5 ≤ x < 2 (where x is a particular real number)For each of the following statements, determine whether they are true or false. If false, write their logical negation (distributing the ¬ across any expressions as necessary) and explain how this negation is true. In each of these, x and y are assumed to be integers. (a) (∀x)(∀y)((y > x) ⇒ (x = 0)) (b) (∃x)(∀y)((y > x) ⇒ (x = 0)) (c) (∀x)(∃y)((y > x) ⇒ (x = 0)) (d) (∀x)(((∀y)(y > x)) ⇒ (x = 0))