What does n+=2 mean in c++

In C, n =2 means adding the current value of variable n to 2 and reassigning the result to variable n, which is equivalent to n = n 2. This compound assignment operation simplifies the code and makes it more readable.

The meaning of n =2 in C

In the C programming language, n =2 is a compound assignment Operation, it is equivalent to n = n 2.

Decomposition operation:

• n: The target variable to which the value is assigned.
• =: Compound assignment operator, abbreviated as "plus equals". It adds the operands and assigns them to the target variable.
• 2: The value that is added to the target variable.

How it works:

n =2 operation adds the current value of variable n to 2 and reassigns the result to variable n. For example:

<code class="cpp">int n = 5;
n += 2; // 等价于 n = n + 2</code>

In the above code, the initial value of variable n is 5. After performing n =2 operation, the value of n will become 7 because 5 2 = 7.

Advantages:

Using compound assignment operations can make the code simpler and more readable. In the above example, using n =2 instead of n = n 2 reduces the duplication of n variables and improves the readability of the code.

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