int main() {int x = 5;int y = 10;int z = ++x + y--;//herecout << "The sum is: " << z << endl;return 0;}value of x and y at comment here
Question
What is the value of x and y at the comment here?
int main() {
int x = 5;
int y = 10;
int z = ++x + y--;//here
cout << "The sum is: " << z << endl;
return 0;
}
Solution
At the comment "here", the value of x is 6 and the value of y is 10.
Here's why:
In the line of code int z = ++x + y--;, the ++x is a pre-increment operation and y-- is a post-decrement operation.
The pre-increment operation (++x) increases the value of x by 1 before the operation is performed. So, x which was initially 5 becomes 6.
The post-decrement operation (y--) decreases the value of y by 1, but only after the operation is performed. So, at this line of code, y is still 10. It will become 9 only after this line of code.
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