Here is example output for input file: input13.txt
Reading from file: input13.txt
Infix expression = (5)
Postfix expression = 5
Infix expression = (1+1)
Postfix expression = 11+
Infix expression = ((9/3)-2)
Postfix expression = 93/2-
Infix expression = (9-(3/2))
Postfix expression = 932/-
Infix expression = (1+(4-(9*(6/(5%7)))))
Postfix expression = 149657%/*-+
Infix expression = ((1+4)-(((9*6)/5)%7))
Postfix expression = 14+96*5/7%-
Infix expression = (((1+(4-9))*6)/(5%7))
Postfix expression = 149-+6*57%/