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int field;
void main () {
// incrementing
{
field = 1;
int res = field + field++;
assert (res == 2);
assert (field == 2);
}
{
field = 1;
int res = field++ + field;
assert (res == 3);
assert (field == 2);
}
{
field = 1;
int res = field + ++field;
assert (res == 3);
assert (field == 2);
}
{
field = 1;
int res = ++field + field;
assert (res == 4);
assert (field == 2);
}
{
field = 1;
assert (field++ == 1);
assert (field == 2);
}
{
field = 1;
assert (++field == 2);
assert (field == 2);
}
// decrementing
{
field = 1;
int d = field + field--;
assert (d == 2);
assert (field == 0);
}
{
field = 1;
int res = field-- + field;
assert (res == 1);
assert (field == 0);
}
{
field = 1;
int res = field + --field;
assert (res == 1);
assert (field == 0);
}
{
field = 1;
int res = --field + field;
assert (res == 0);
assert (field == 0);
}
{
field = 1;
assert (field-- == 1);
assert (field == 0);
}
{
field = 1;
assert (--field == 0);
assert (field == 0);
}
}
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