//Example 1.6
                      clc
                    //Calculate the area of circle
   radius;                               //In scilab we need not to declare variables
    printf("Radius= ?");                            //output statement(prompt)
    radius=scanf("%f");                            //input statement
    area=3.14159 *radius*radius;             //Assignment statement
    printf("Area = %f", area);                    //output statement