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+clc
+// Part (a)
+m = 3 // mass of substance in kg
+V1 = 0.22 // Initial volume of system in m^3
+P1 = 500 // Initial pressure of system in kPa 
+P2 = 100 // Final pressure of system in kPa  
+V2 = V1*(P1/P2)^(1/1.2) // Final volume of system
+dU = 3.56*(P2*V2-P1*V1) // Change in internal energy of substance in kJ/kg
+n = 1.2 // polytropic index
+W = (P2*V2-P1*V1)/(1-n) // work done in process
+Q = dU+W // Heat addition in process
+
+printf("\n Example 4.4")
+printf("\n Part A:")
+printf("\n For the quasi static process is: \n ")
+printf("Q:   %fkJ",Q)
+printf("\n dU: %fkJ",dU)
+printf("\n W: %fkJ",W)
+//The provided in the textbook is wrong
+// Part (b)
+printf("\n\n Part B:")
+Qb = 30 // heat transfer in kJ 
+Wb = Qb-dU // Work done in kJ
+printf("\n Work transfer for the process is %fkJ.",Wb) 
+//The answers vary due to round off error
+// Part (c)
+printf("\n\n Part C:")
+printf("\n Wb is not equal to integral(p*dv) since the process is not quasi static.")
+