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#ifndef EXPRESSION_H
#define EXPRESSION_H
enum my_expr_type
{
EXPR_ADDITION = 0,
EXPR_SUBTRACTION,
EXPR_MULTIPLICATION,
EXPR_DIVISION,
EXPR_NEGATION,
EXPR_NUMBER
};
struct my_expr
{
enum my_expr_type type;
union
{
struct
{
struct my_expr *left;
struct my_expr *right;
} children;
int value;
} data;
};
#endif /* ! EXPRESSION_H */
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