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+//Variable declaration
+n=1;
+e=1.6*10**-19;
+m=9.1*10**-31; //mass(kg)
+h=6.63*10**-34; //planck's constant
+L=2*10**-10; //width(m)
+
+//Calculation
+E1=n**2*h**2/(8*m*e*L**2); //energy value in g state(eV)
+E2=2**2*E1; //energy value in 2nd quantum state(eV)
+E4=4**2*E1; //energy value in 2nd quantum state(eV)
+
+//Result
+printf('energy value in 2nd quantum state is %0.3f \n',(E2))
+printf('energy value in 4th quantum state is %0.3d eV\n ',(E4))
+printf('answer varies due to approximating off errors\n') \ No newline at end of file