I need a code in C++ for this please help.

Evaluate the following post x expressions by using the algorithm given in this chapter. Show the status of the stack after each step of the algorithm. Assume the following values for the identi ers: a = 7, b = 3, c = 12, d = 5, e = 1.

a. a b c +

b. a b c d * +

c. a b +c d e * +

The pseudocode algorithm is then for (each character ch in the string) if (ch is an operand) Push the value of the operand ch onto the stack else // ch is an operator named op Evaluate and push the result oper Pop the stack and2 = top of stack and! = top of stack oper Pop the stack result = operand1 op operand2 Push result onto the stack