Computer Applications
If a = 5, b = 9, calculate the value of a in the following expression:
a += a++ - ++b + a
Answer
6
Working
a += a++ - ++b + a
⇒ a = a + (a++ - ++b + a)
⇒ a = 5 + (5 - 10 + 6) [∵ a++ will first use current value of a then increment it to 6. ++b will increment b to 10 and use the incremented value. As a++ incremented a to 6 so the value of last a in the expression is 6]
⇒ a = 5 + 1
⇒ a = 6
Related Questions
What will be the output of the following if x = 5 initially?
(a) 5* ++x;
(b) 5* x++;
What will be the output of the variable 'a'?
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(a) m -= n;
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(a) a - (b++) * (--c);
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