Noratrieb/calculator
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free lol

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nora 2022-01-21 23:13:53 +01:00
parent 033db1664d
commit 4ccafebc02
1 changed files with 19 additions and 0 deletions
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19
calc.c
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@ -182,6 +182,23 @@ int64_t eval_expr(const Expr expr) {
} }
} }
void free_expr(Expr expr) {
switch (expr.tag) {
case ADD:
case SUB:
case MUL:
case DIV:
free_expr(*expr.value.op.lhs);
free_expr(*expr.value.op.rhs);
free(expr.value.op.lhs);
free(expr.value.op.rhs);
break;
case LITERAL:
break;
}
}
int main(int argc, char **argv) { int main(int argc, char **argv) {
if (argc == 1) { if (argc == 1) {
printf("provide me an argument please\n"); printf("provide me an argument please\n");
@ -196,6 +213,8 @@ int main(int argc, char **argv) {
const int64_t result = eval_expr(expr); const int64_t result = eval_expr(expr);
free_expr(expr);
printf("%ld\n", result); printf("%ld\n", result);
return 0; return 0;