Expressions are pieces of Pog code which have an intrinsic value attached to them. They may perform work as a side-effect. The chain of expression rules defines the precedence of operators, which follow ANSI C precedence conventions. Not all C operators are implemented in Pog.
The following tables describe the operators supported by Pog, and their precedence.
| Operation | Symbol | Notes |
| Addition | + | |
| Subtraction | - | |
| Multiplication | * | |
| Division | / | |
| Modulo (remainder) | % | Returns the integer remainder after an integer division. i.e. 5%3 returns 2 |
| Operation | Symbol | Notes |
| Equality | == | |
| Inequality | != | |
| Not | ! | |
| Less Than | < | |
| Less Than or Equal | <= | |
| Greater Than | > | |
| Greater Than or Equal | >= |
| Operation | Symbol | Notes |
| And | && | |
| Or | || | |
| Not | ! |
| Operation | Symbol | Notes |
| Bitwise And | & | 4 & 8 will yield 0 4 & 7 will yield 4 |
| Bitwise Or | | | 4 & 8 will yield 12 4 & 7 will yield 7 |
| Bitwise Exclusive Or | ^ | 4 ^ 8 will yield 12 4 ^ 7 will yield 3 Adds the bits that are only on in one of the two numbers |
| Bitwise Not | ~ |
| Operation | Symbol | Notes |
| Assignment | = | x = y will set x to the value of y |
| Additive Assignment | += | x += y will set x to the value of x + y |
| Subtractive Assignment | -= | x -= y will set x to the value of x - y |
| Multiplicative Assignment | *= | x *= y will set x to the value of x * y |
| Divisive Assignment | /= | x /=y will set x to the value of x / y |
| Remainder assignment | %= | x %=y will set x to the value of x % y |
| Bitwise And assignment | &= | |
| Bitwise Or assignment | |= | |
| Bitwise Xor assignment | ^= | |
| Bitwise Not assignment | ~= | |
| Auto Increment | ++ | x++ will increment x by 1 with the value returned being
that of x ++x will increment x by 1 with the value returned being that of x+1 |
| Auto Decrement | -- | As above |
| Highest Precedence | ||
| ++ | Post-increment | Left to right |
| -- | Post-decrement | Left to right |
| ( ) | Function call | Left to right |
| [ ] | Array element | Left to right |
| ++ | Pre-increment | Right to left |
| -- | Pre-decrement | Right to left |
| ! | Logical NOT | Right to left |
| ~ | Bitwise NOT | Right to left |
| - | Unary minus | Right to left |
| + | Unary plus | Right to left |
| * | Multiply | Left to right |
| / | Divide | Left to right |
| % | Remainder | Left to right |
| + | Add | Left to right |
| - | Subtract | Left to right |
| << | Left shift | Left to right |
| >> | Right shift | Left to right |
| < | Less than | Left to right |
| <= | Less than or equal to | Left to right |
| > | Greater than | Left to right |
| >= | Greater than or equal to | Left to right |
| == | Equal | Left to right |
| != | Not equal | Left to right |
| & | Bitwise AND | Left to right |
| ^ | Bitwise exclusive OR | Left to right |
| | | Bitwise OR | Left to right |
| && | Logical AND | Left to right |
| || | Logical OR | Left to right |
| ? : | Conditional | Right to left |
| = | Assignment | Right to left |
| *=, /=,%=, +=, -=, &=, ^=, |= | Compound assignment | Right to Left |
| , | Comma | Left to right |
| Lowest Precedence |