What does a+++b mean in c++

In C, "a b" is a post-increment operator expression, which increments variables a and b by 1 in sequence, and finally outputs the value of a.

The meaning of a b in C

In C language, a b is a post-increment operator expression Mode. It is equivalent to the combination of the following two operations:

<code class="cpp">a++;
b++;</code>

Thus, the expression a b performs the following operations:

1. First, it increments the value of variable a by 1.
2. Then, it increments the value of variable b by 1.

It should be noted that unlike prefix increment operators, such as a, postfix increment operators do not immediately change the value of the operand. Therefore, in the above expression, a b does not immediately affect the value of a or b. The values ​​of a and b are incremented only after the expression has been executed.

For the following code snippet:

<code class="cpp">int a = 1;
int b = 2;
cout << a+++b;</code>

The output will be 3 because it will increment a and b in sequence and then print the value of a.

Please note that this operator can only be used for integer variables and is invalid for floating point variables or other data types.

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