clc;
a=63.54;     //atomic mass of Cu
m=100;        //mass of Cu
moles=m/a;   //calculating moles of U
n=6.023*10^23;    //avogadro's no.
no=moles*n;        //calculating no. of atoms
disp(moles,"Maoles of U = ");      //displaying result
disp(no,"No. of atoms = ");     //displaying result