Postfix Evaluation(Single or Multi Digit) using STACK in C

POSTFIX EVALUATION WITH SINGLE OR MULTI DIGIT:

Students find difficulties in finding the correct code for Postfix evaluation using Stack which works for Single as well for multidigit also;

So here is the Question Format Given::-

Question_2; Data_Structure:

 Write a C program to evaluate the following POSTFIX expression. Use STACK to solve this problem. 

• INPUT: 5 6 2 + * 12 4 / - 
• OUTPUT: 37

Basic Understanding:

Here is the Correct code: