What will the following code display?
int number = 6;
cout < < ++number < < endl;
1. 0
2. 5
3. 7
4. 6

7

Explanation:

The operator '++number' is called the pre increment operator which is used to increment the value by 1 first and then assign.

for example:

int n = 10;

b = ++n;

here, it increase the value of 10 first then assign to b. hence, b assign the value 11.

similarly, in the question:

int number = 6;

after that, the pre increment operator increase the value by one and then assign to number.

it means number assign the value 7 and finally print the value.

Therefore, the answer is 7.

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