Expressions
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An expression is a combination of operators, constants and variables. It also include function call which return values. An expression may include one or more operators. The operator in C++ are:
Arithmetic operators
| Operator name | Syntax | Prefix | Suffix |
| Basic assignment | a = b | ||
| Addition | a + b | ||
| Subtraction | a - b | ||
| Unary minus | -a | ||
| Unary plus | +a | ||
| Multiplication | a * b | ||
| Division | a / b | ||
| Modulo (remainder) | a % b | ||
| Increment | ++ | ++a | a++ |
| Decrement | -- | --a | a-- |
Comparison operators/ Relational operators
| Operator name | Syntax |
| Equal to | a ==b |
| Not equal to | a !=b |
| Greater than | a > b |
| Less than | a > b |
| Greater than or equal to | a >=b |
| Less than or equal to | a <=b |
Logical operators
| Operator name | Syntax |
| Logical negation (NOT) | !a |
| Logical AND | a && b |
| Logical OR | a || b |
Bitwise operators
| Operator name | Syntax |
| Bitwise NOT | ! a |
| Bitwise AND | a & b |
| Bitwise OR | a | b |
| Bitwise XOR | a ^ b |
| Bitwise left shift | a << b |
| Bitwise right shift | a >>b |
Compound-assignment operators
| Operator name | Syntax |
| Addition assignment | a += b |
| Subtraction assignment | a -= b |
| Multiplication assignment | a *= b |
| Division assignment | a /= b |
| Modulo assignment | a %= b |
| Bitwise AND assignment | a &= b |
| Bitwise OR assignment | a |= b |
| Bitwise XOR assignment | a ^= b |
| Bitwise left shift assignment | a <<=b |
| Bitwise right shift assignment | a >>=b |
Type of Expression
- Constant Expression
- Integer Expression
- Float Expression
- Pointer Expression
- Relational Expression
- Logical Expression
- Bitwise Expression
20 29+48%2
m+n-2 29+int (222.3)
m+n 294+float (2224)
&m ptr ptr+1
a+b==c+d x<=y m+n>100
a>b && x==1098 x==200 ||y==20
a>>1098 x<<200
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