First, we will apply the mod 10 operator to separate our digits. Assuming the number entered by us is 153, you can see that 153 is divided by 10 and the remaining 3 is pushed to the stack:
Figure 3.4
The value in the stack is pushed at the index location indicated by top. Initially, the value of top is -1. It is so because before the push operation, the value of top is incremented by 1, and the array is zero-based, that is, the first element in the array is placed at the 0 index location. Consequently, the value of top has to be initialized to -1. As mentioned, the value of top is incremented by 1 before pushing, that is, the ...
