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+//             Example 9.8 
+//Write a multifunction to illustrate the properties of global variables.
+funcprot(0);
+function[x]=fun1()
+    global x;
+    x=x+10;            //global x
+endfunction
+function[x]=fun2()
+    x=1               //Local x
+endfunction
+function[x]=fun3()
+    global x;
+    x=x+10;            //global x
+endfunction
+    global x;
+    x=10;
+    printf("x=%d\n",x)
+    //calling fun1(),fun2(),fun3() functions
+    printf("x=%d\n",fun1());
+    printf("x=%d\n",fun2());
+    printf("x=%d\n",fun3());