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|
input:
// empty
|
input line
;
line:
'\n'
|
exp '\n'
{
cout << "\t" << $1 << endl;
}
|
error '\n'
;
exp:
NUM
|
VAR
{
$$ = *$1;
}
|
VAR '=' exp
{
$$ = *$1 = $3;
}
|
FNCT '(' exp ')'
{
$$ = (*$1)($3);
}
|
exp '+' exp
{
$$ = $1 + $3;
}
|
exp '-' exp
{
$$ = $1 - $3;
}
|
exp '*' exp
{
$$ = $1 * $3;
}
|
exp '/' exp
{
$$ = $1 / $3;
}
|
'-' exp %prec NEG
{
$$ = -$2;
}
|
// Exponentiation:
exp '^' exp
{
$$ = pow($1, $3);
}
|
'(' exp ')'
{
$$ = $2;
}
;
|
