Who can help me? This is my homework

Question

Two-Input Function Calculator

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
/*this is show how many Two-Input Function*/
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

Answer 1

We are not here to do your homework. If you have specific questions we can help, but nobody should do your homework for you.

Answer 2

input number of lines
loop over each line until count above reached
for each loop iteration :
read line
break into words (store words in an array)
write a function that looks at the 1st array element, matching the correct command.
check the next array entry - if number use it, otherwise recursively call yourself to decode another command.
do the same for the 2nd arg, then call the appropriate operation with the 2 arguments based on the original value containing the command name.

key point here is recursion. if you don't know what recursion is, look it up.

Answer 3

ok ,but did you can tell me the step or direction for this question?

Answer 4

Thanks Udi, exactly my thought.

Answer 5

how can I use recursion to found which Function input?