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8. If a = 5 and b = 4 the value of the expression a +b/2^ + 6 is d )18 b)16 c)17 a)15

Answer plz

25th Feb 2023, 6:35 AM
jayasri
2 odpowiedzi
+ 1
The value of the expression in C++ depends on the operator precedence and associativity rules. In C++, the operator precedence rules state that the exponentiation operator (^) has higher precedence than the division operator (/), which in turn has higher precedence than the addition operator (+). The associativity rules state that all of these operators are left-associative, meaning that they are evaluated from left to right. Using these rules, we can evaluate the expression as follows: a + b / 2^ + 6 = a + (b / (2^)) + 6 // exponentiation is evaluated first = 5 + (4 / (2^)) + 6 // substitute the given values of a and b = 5 + (4 / 16) + 6 // evaluate the exponentiation = 5 + 0.25 + 6 // evaluate the division = 11.25 However, since both a and b are integers, the division operator / performs integer division, which truncates the result towards zero. This means that 4 / 16 will evaluate to 0, not 0.25. Therefore, the expression simplifies to:
25th Feb 2023, 7:53 AM
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a + b / 2^ + 6 = a + (b / (2^)) + 6 // exponentiation is evaluated first = 5 + (4 / (2^)) + 6 // substitute the given values of a and b = 5 + (4 / 16) + 6 // evaluate the exponentiation = 5 + 0 + 6 // evaluate the division (truncated towards zero) = 11 Therefore, the value of the expression in C++ when a = 5 and b = 4 is 11. Therefore, the correct option is (c) 17 is not the correct answer for this expression.
25th Feb 2023, 7:53 AM
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