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clear
//
//
//
//Variable declaration
h=2;
k=2;
l=0;
n=1;
theta=32; //angle(degrees)
lamda=1.54*10^-10; //wavelength(m)
//Calculation
theta=theta*%pi/180; //angle(radian)
d=n*lamda*10^10/(2*sin(theta)); //spacing of crystal(angstrom)
a=d*sqrt(h^2+k^2+l^2); //lattice parameter(angstrom)
r=a/(2*sqrt(2)); //radius of atom(angstrom)
//Result
printf("\n lattice parameter is %0.1f angstrom",a)
printf("\n radius of atom is %0.2f angstrom",r)
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