Question

Assume that the variable count has been declared as type int. Which statement adds 10 to count?

a) count = 10;
b) count == count + 10;
c) count = count + 10;
d) count + 10;

Answer 1

The correct statement to add 10 to the variable count declared as type int is "c) count = count + 10;" which assigns the new value back to count, increasing it by 10.

Step-by-step explanation:

To add 10 to the variable count which is declared as type int, the correct statement to use is "c) count = count + 10;". Here is a breakdown of why the other choices are incorrect:

• a) count = 10; - This line will set the value of count to 10, rather than adding 10 to the current value.
• b) count == count + 10; - This line uses a comparison operator (==) instead of an assignment operator (=), so it compares two values rather than assigning a new value to count.
• d) count + 10; - This expression adds 10 to count, but it does not assign the new value back to count, so the original value of count remains unchanged.

The correct option, "c) count = count + 10;" takes the current value of count, adds 10 to it, and then assigns the result back to count, effectively increasing its value by 10.