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Given the following variable declaration, which of the following expressions evaluate to true?
C Programming Given the following variable declaration, which of the following expressions evaluate to true? int x[] = {5, 10, 3, 8, 12}; a. ++x[1] 10 b. x[0]-- < 5 || x[2] < 4 c. x[0] 4 d. x[1]++ > 10 && x[4] > 10
Harris JL
true explanation: Given x=10 (x equals 10); So x is not greater than 10. Expression evaluates to true b. x ans: true explanation: Given x=10 ; So x has some value. Expression evaluates to true c. (x != 5) && (y != z) ans: true explanation: Given x=10 ; So x is not equal to 5. Given y=15 and z=20; So both are not equal; Both the conditions are true; Expression evaluates to true d. x >= z || (x + y >= z) ans: true explanation: Given x=10 and z=20; x is not greater than or equal to z. first condition i.e x>=z is false But x+y =>30 is greater than or equal to z. i.e x+y >=z is true; Since conditions are combined using OR operator, it is evaluated to true (either of the...
Niya Mezrin
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How do you evaluate variable expressions?
To evaluate a variable expression, replace all the variables with numbers and simplify the resulting numerical expression. 3m for m = 9 3(9)=27
How do you Evaluating variable expressions with exponents?
Basically the same way that you evaluate other types of expressions with variables: * You replace the variables by the value assigned to the variables. * Then you do the specified calculations.
What does it mean for a coordinate pair to be a solution to a system of equations?
It means that if you replace one variable with one of the numbers, and the other variable with the other numbers, and then evaluate the expressions on each side of the equations, the equalities will be true.
What is the definition of equivalen variable expressions?
Two expressions are "equivalent" if they have the same result for any values of the variable or variables.
How do you determine whether a number is a solution of an equation?
Substitute the value found back into the equation, evaluate the expressions and see if the resulting equation is true.
What is the definition of an equivalent variable expressions?
An equation if both expressions are equal
Can expressions have and equal sign with a variable?
Expressions never have equality signs
What is Substitute a number for each variable and evaluate the results?
evaluate
What Algebraic expressions?
An expression with a variable.
How are numerical and variable expressions similar?
These two are both similar because they are both expressions.
What is Variable declaration and variable initialization?
...are important things in programming. Example: extern int variable; /* declaration */ int variable= 8; /* definition with initialization */
To evaluate a variable expression you must do what to values for the variable?
You must substitute values for the variable.
