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diff --git a/1808/CH1/EX1.8/Chapter1_Example8.sce b/1808/CH1/EX1.8/Chapter1_Example8.sce
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+clc
+clear
+//INPUT DATA
+no=0.5;//Air standard efficiency in percenatge
+nr=0.7;//relative efficiency in percenatge
+nm=80;//mechanical efficiency in percenatge
+cv=45000;//calorific value in kJ/kg
+BP=75;//Brake power in kW
+Ra=0.287;//Gas constant
+Ta=300;//suction temperature in K
+pa=1*100;//pressure in kN/m^2 
+Vs=0.10352;//swept volume in m^3/s
+N=2500;//speed in rpm
+nc=1;//number of cylinders
+n=2;//for four cylinders
+
+//CALCULATIONS
+Rc=(1/(1-no))^(1/(1.4-1));//copression ratio
+nit=(no*nr)*100;//Indicated thermal efficiency in percentage
+IP=(BP/nm)*100;//indicated power in kW
+mf=((IP*100)/(nit*cv));//mass fuel consumption in kg/s
+bsfc=(mf*3600)/BP;//Brake specific fuel consumption in kg/kWh 
+nbt=(BP/(mf*cv))*100;//Brake thermal efficiency in percentage
+ma=16*mf;//mass of air in kg/s
+va=(ma*Ra*Ta)/(pa);//actual volume of air consumption
+vs=va/no;//swept volume in m^3/s
+d=(4*60*n*vs/(3.14*1.5*N))^(1/3);//bore in m
+L=1.5*d;//stroke in m
+
+//OUTPUT
+printf('(i)Compression ratio is %3.3f \n(ii)Indicated thermal efficiency is %3.2f percentage \n (iii)Brake specific fuel consumption is %3.4f kg/kWh \n(iv)Brake thermal efficiency is %3.d percentage \n(v)bore %3.2f m \n stroke is %3.2f m',Rc,nit,bsfc,nbt,d,L)
+