What does i+=2 mean in c++

i =2 is equivalent to i = i 2 in C and is used to increment a variable by a specific increment (2 in this case). It is often used to update variables in loops.

The meaning of i =2 in C

In C, i =2 is a compound assignment operator , equivalent to i = i 2. It adds 2 to the current value of variable i and stores the result back to i.

Usage

i =2 operator is mainly used to increment variables, increasing by 2 for each iteration. This is useful in scenarios where a variable needs to be updated by a specific increment in a loop.

Syntax

i =2 The syntax of the operator is as follows:

<code class="cpp">i += 2;</code>

Among them:

• i: to increment Variable
• =: compound assignment operator

Example

The following example demonstrates the use of the i =2 operator:

<code class="cpp">int main() {
  int i = 0;

  while (i < 10) {
    cout << i << " ";
    i += 2;
  }

  return 0;
}</code>

Output:

<code>0 2 4 6 8</code>

In this example, the i =2 operator is used to increment i by 2 in a while loop until it reaches 10.

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