# Basic Arithmetic of C++

**Arithmetic Operators:** C++ supports these arithmetic operator.

```
Operator Symbol Form
Addition + x+y
Subtraction - x-y
Multiplication * x*y
Division / x/y
Modulus % x%y
```

**Addition:** The addition operator adds its operands together.

```
int x=2+3;
cout<<x;
```

**Output:**

```
5
```

**Subtraction:** The subtraction operator subtracts one operands from the other.

```
int x=5-3;
cout<<x;
```

**Output:**

```
2
```

**Multiplication:** The multiplication operator multiplies its operands.

```
int x=3*2;
cout<<x;
```

**Output:**

```
6
```

**Division:** The division operator divides the first operand by the second. Any remainder is dropped in order to return an integer value.

```
int x=10/3;
cout<<x;
```

**Output:**

```
3
```

If one or both of the operands are floating point values,the division operator performs floating point division.

**Modulus:** The modulus operator (%) is informally know as the remainder operator because it returns the remainder after an integer division.

```
int x=25%6;
cout<<x;
```

**Output:**

```
1
```

**Operator Precedence:** Operator precedence determines the grouping of terms in an expression,which affects how an expression is evaluated certain operators take higher precedence over others; for example, the multiplication operator has higher precedence over the addition operator.

**For example:**

```
int x=5+2*2;
cout<<x;
```

**Output:**

```
9
```

The program evaluates 2*2 first, and then adds the result 5.

As in mathematics,using parentheses alters operator precedence.

```
int x=(5+2)*2;
cout<<x;
```

**Output:**

```
14
```