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+// Chapter 5 Example 1
+//==============================================================================
+clc;
+clear;
+
+//input data
+//given intercepts 3,4 and ∞, the recipocals of intercepts is
+// (1/3):(1/4):(1/∞)
+// LCM = 12
+// multiplying by LCM we get miller indices
+// miller indices of a plane are the smallest integers of the reciprocals of its intercerpts
+// therefore miller indices(h k l) is (4 3 0);
+
+h   = 4;       // miller indice
+k   = 3;       // miller indice
+l   = 0;       // miller indice
+a   = 2;      // primitive vector of lattice in angstrom
+
+//Calculations
+
+dhkl    = a/sqrt((h^2)+(k^2)+(l^2)); // interplanar distance
+
+//Output
+mprintf('Miller indices = (4 3 0)\n');
+mprintf(' The interplanar distance d = %3.1f Å',dhkl);
+//==============================================================================