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+clc
+clear
+//Input data
+m=30;//The air fuel ratio by mass
+T1=300;//The temperature of air at the beginning of the compression in K
+r=16;//The compression ratio
+CV=42000;//The calorific value of the fuel in kJ/kg
+g=1.4;//Isentropic index
+Cp=1.005;//Specific heat at constant prassure in kJ/kgK
+
+//Calculations
+T2=T1*(r^(g-1));//Temperature at point 2 in K
+T3=[(1/m)*(CV/Cp)]+T2;//Temperature at point 3 in K
+C=T3/T2;//The cut off ratio
+n=(1-[(1/r^(g-1))*[((C^g)-1)/(g*(C-1))]])*100;//The ideal efficiency of the engine based on the air standard cycle
+
+//Output
+printf(' The ideal efficiency of the engine based on the air standard cycle = %3.1f percent ',n)