計程 3/20 E1, E2, E3

[Muscovy (Muscovy)]

        這些程式怎麼寫都寫不漂亮... @_@
        我把解釋寫在另一篇好了.

        不過呢, 今天發現海豹可不只是會耍寶而已.
        厲害厲害...

E1)     # include <stdio.h>

        # define PI     3.14159

        int main()
        {
            double      r, a, l;

                printf("Radius?\n");

                if (scanf("%lf", &r) < 1)
                        exit(1);
                a = PI * r * r;
                l = 2 * PI * r;

                printf("Area == %f, len == %f\n", a, l);

            return 0;
        }

E2)     # include <stdio.h>

        int main()
        {
            int i = 2, j = 3;

                printf("value of (i > j) == %d\n"
                        "value of (i < j) == %d\n"
                        "value of (i >= j) == %d\n"
                        "value of (i <= j) == %d\n"
                        "value of (i == j) == %d\n"
                        "value of (i != j) == %d\n",
                        i > j, i < j, i >= j, i <= j, i == j, i != j
                );

            return 0;
        }

E3)     # include <stdio.h>

        int main()
        {
            double      h_cm, h_in;
            int         h_ft;

                printf("Your height(cm)?\n");

                if (scanf("%lf", &h_cm) < 1)
                        exit(1);
                h_ft = (int)(h_cm / 30.48);     /* see note below */
                h_in = h_cm / 2.54 - h_ft * 12.0;

                printf("%.2fcm == %dft %.2fin\n", h_cm, h_ft, h_in);

            return 0;
        }

        NOTE: 另一篇解釋...


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  新詩練習：新鮮。踩破初春裡的狗大便；不經意的滄桑，滿溢著嫩黃的喜悅。

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