These questions are generally asked in university exam
infix, prefix based stack question
find Postfix & Prefix Expression of given infix expression in all question (89 to 108)
                    89. Infix Expression: ( A + B ) * ( C - D ); 
                    Postfix Expression: 
                    Prefix Expression: 
                  
                Answer:
                    Postfix: AB+CD-* 
                    Prefix: *+AB-CD
                  
                90. Infix Expression: A * ( B + C ) / D; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC+*D/ 
                Prefix: /*A+BCD
              
                91. Infix Expression: ( A + B ) - ( C * D ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB+CD*- 
                Prefix: -+AB*CD
              
                92. Infix Expression: A + ( B * C ) - D; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC*+D- 
                Prefix: -+A*BCD
              
                93. Infix Expression: ( A - B ) * ( C + D ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB-CD+* 
                Prefix: *-AB+CD
              
                94. Infix Expression: ( A + B * C ) / D; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC*+D/ 
                Prefix: /+A*BCD
              
                95. Infix Expression: A * ( B + C ) / ( D - E ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC+*DE-/ 
                Prefix: /*A+BC-DE
              
                96. Infix Expression: A + B * ( C - D ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABCD-*+ 
                Prefix: +A*B-CD
              
                97. Infix Expression: ( A + B ) * ( C - D / E ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB+CD*E/- 
                Prefix: *+AB-CD/E
              
                98. Infix Expression: ( A - B ) + ( C * D / E ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB-CD*E/+ 
                Prefix: +-AB*CD/E
              
                99. Infix Expression: ( A * B ) + ( C / D ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB*CD/+ 
                Prefix: +*AB/CD
              
                100. Infix Expression: ( A + B ) / ( C - D ) * E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB+CD-/E* 
                Prefix: *+/AB-CD E
              
                101. Infix Expression: ( A + B ) * ( C / D ) - E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB+CD/*E- 
                Prefix: -*+AB/CD E
              
                102. Infix Expression: A * ( B + C - D ) / E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC+ D-* E/ 
                Prefix: /* A+ BC -D E
              
                103. Infix Expression: A + B * C - D / E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: ABC*+ D E/- 
                Prefix: -+A* B C / D E
              
                104. Infix Expression: ( A / B ) + ( C - D ); 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB/C D-+ 
                Prefix: + /A B - C D
              
                105. Infix Expression: ( A + B ) * C - D / E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB+C* D E/- 
                Prefix: - *+ A B C /D E
              
                106. Infix Expression: ( A * B - C ) / D + E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB*C-D/E+ 
                Prefix: + / - *A B C D E
              
                107. Infix Expression: ( A - B ) + C * D / E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB- CD*E/+ 
                Prefix: + -AB * C D /E
              
                108. Infix Expression: ( A / B ) - ( C + D ) * E; 
                Postfix Expression: 
                Prefix Expression: 
              
              Answer:
                Postfix: AB/ CD+ E*- 
                Prefix: - /A B * + C D E