I have some question on my code

Question

This is my project↓

Function Behavior
ADD a b a + b
SUB a b a - b
MUL a b a * b
MAX a b (a>=b) ? a : b
MIN a b (a<b) ? a : b

EX1, “ADD MUL 2 3 4” is 2*3+4 = 10
EX2, “ADD 4 MUL 3 3” is 4+3*3 = 13
EX3, “ADD MUL 2 3 MUL 4 5” is 2*3+4*5 = 26

Sample Input
5
/*how many operation*/
ADD 3 4
ADD MUL 3 4 SUB 2 3
ADD 4 MUL 2 3
MAX 1 MIN ADD 5 1 3
ADD 2 MAX ADD 2 3 MUL 2 3

Sample Output
7
11
10
3
8

I have do it use my way but it have my problem.

(continue↓)

Answer 1

my question is I haven't learn "stack", but our teacher still want us complete it.

I use "function" "if else" to do it ,but the result is wrong.

can help me show how to do this project?