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+//Solution 2-4
+WD=get_absolute_file_path('2_04_solution.sce')
+datafile=WD+filesep()+'2_04_example.sci'
+clc;
+exec(datafile)
+//conversion
+T = T + 273; //[degree C] to [K]
+//(a)
+c = sqrt(k * R * T);
+printf("Speed of sound in air at 30C is %1.0f m / s", c);
+//(b)
+Ma = V / c;
+printf("\nMach number at diffuser inlet is %1.3f", Ma);
+if Ma < 1 then
+ printf("\nHence flow is subsonic");
+elseif Ma == 1
+ printf("\nHence flow is sonic");
+else
+ printf("\nHence flow is supersonic");
+end