Report#4

$B!&Ld(B24$B!A(B31$B$^$G$N%3!<%I$r $B!A /*Java$BBh0l2s;n83LdBj$N9M;!!&%3!<%I$K$D$$$F$N%=!<%9(B*/ public class Test1{ public static void main(String args[]){ Q24(); Q25(); Q26(); Q27(); Q28(); Q29(); Q30(); Q31(); } public static void Q24() { /*$BLd#2#4$N%3!<%I(B*/ int x,y; x=100; x+=1; x--; y = 200 + x; System.out.println("Q24 = " + y++); } public static void Q25() { /*$BLd#2#5$N%3!<%I(B*/ int a=0, x=0; a = 5; a +=3; x = ++a; System.out.println("Q25 = " + x); } public static void Q26() { /*$BLd#2#6$N%3!<%I(B*/ int a=9, b=3; a /= b; System.out.println("Q26 = " + (a%=b)); } public static void Q27() { /*$BLd#2#7$N%3!<%I(B*/ int i,j; for(i=0,j=0; i<3; i++) ++j; System.out.println("Q27 = " + i * j); } public static void Q28() { /*$BLd#2#8$N%3!<%I(B*/ int i=2; while(i-- > 0){ System.out.print("Q28 = "); System.out.println(i); } } public static void Q29() { /*$BLd#2#9$N%3!<%I(B*/ int num=10000; for(int i = 0; i < 4; ++i) num >>= i; System.out.println("Q29 = " + num ); } public static void Q30() { /*$BLd#3#0$N%3!<%I(B*/ int num = 0; for(int i=1 ; i <= 10; i++){ if(++num % i==0) num++; } System.out.println("Q30 = " + ++num); } public static void Q31() { /*$BLd#3#1$N%3!<%I(B*/ int a = 9; if(a++ != 10 | a++ == 10) a++; System.out.println("Q31 = " + a); } } $B!A [Yuta-AKAMINE:~/Javaworks] j03002% java Test1 Q24 = 300 Q25 = 9 Q26 = 0 Q27 = 9 Q28 = 1 Q28 = 0 Q29 = 156 Q30 = 12 Q31 = 12

$BLd(B24

$B%$%s%/%j%a%s%H!&%G%/%j%a%s%H1i;;;R$O!"%*%Z%i%s%I$N8e$m$XCV$/$+!"A0$XCV$/$+$G0c$C$F$/$k!#(Bx++;$B$b(B++x;$B$b(Bx=x+1$B$rI=$7$F$$$k$,!"(Bx++$B$r0z?t$H$7$F?tCM$r=PNO$7$h$&$9$k$H!"#1%$%s%/%j%a%s%H$9$kA0$NCM$N(Bx$B$H$7$FI>2A$5$l$k!#$h$C$FLd$N%3!<%I$N=PNOCM$b!"%$%s%/%j%a%s%HA0$NCM$KI>2A$5$l!"#3#0#0$H=PNO$5$l$k!#(B

$BLd(B25

$BLd#2#4$r;29M$K$7$F9M$($k$H!"(B
(1): a = 5; $B"*(B (a = 5)$B!"(B
(2): a += 3; $B"*(B (a = a+3 =8)$B!"(B
(3): ++a; $B"*(B (a = a+1 = 9$B$,B(:B$KI>2A$5$l$k!#(B)

.....$B0J>e$+$i!"#9$r=PNO$9$k!#(B

$BLd(B26

a /= b$B!!$NI=5-$H!!(Ba = a / b$B$OF1CM!#JQ?t(Ba$B$X!"(Ba / b$B$N1i;;7k2L$rBeF~$9$k!#(Ba %= b$B!!$O!"(Ba / b $B$O!"(Ba / b $B$NM>$j$NCM$r(Ba$B$XBeF~$9$k%*%Z%i%s%I$J$N$G!"$3$N;~E@$G(Ba = 9 / 3 = 3$B$H$J$C$F$$$k!#$h$C$F$j$r9M$($k$N$G!"#0$r=PNO$9$k!#(B

$BLd(B27

$B%k!<%W=*N;;~E@$G!"(Bj = 3,i = 3$B$H$J$C$F$$$k!#(BSystem.out.println();$B$O%k!<%W$NBP>]30$J$N$G!"=PNOCM$O(B9$B$N$_!#%k!<%WK\BN$,(B{}$B$J$I$GFC$K6h@Z$i$l$F$J$$$H$-$O!"$=$N$9$08e$N%a%=%C%IEy$,%k!<%W$NBP>]$K$J$k!#(B

$BLd(B28

i=2$B$N=i4|CM$G!"(Bi-- > 0$B$H>r7o$,@_Dj$5$l$F$$$k$N$G!"%k!<%W$O#22s$BLd(B29

/*$B%5%s%W%k%W%m%0%i%`$N9M;!MQ%=!<%9!&%*%V%8%'%/%H;X8~%W%m%0%i%`!A%a%=%C%I$^$G(B*/

class CircleC {               /*$B1_$NLL@Q$r5a$a$k$?$a$N%/%i%9(B*/
    double pai = 3.14;
    double circle(int r)
    {                                                      
        return pai * r * r;
    }
}


class CircleC_Print extends CircleC {   /*CircleC$B$r3HD%$7$F?7$7$$%/%i%9$r@8@.(B*/
    void print_circle(double c){ 
        System.out.println("Another area = " + c);
    }
}


public class Rep4a {
    public static void main(String args[]){

        demo_object();           /*CircleC$B$,JV$7$?1_$NLL@Q$rI=<($9$k%a%=%C%I(B*/

        CircleC_Print obj2 = new CircleC_Print();
        double area2 = obj2.circle(20);
        obj2.print_circle(area2);    /*CircleC$B$r3HD%$7$?%/%i%9$G1_$NLL@QI=<((B*/

        method_add(10,9);             /*void$B7?$N%a%=%C%I(Bmethod_add$B$N8F$S=P$7(B*/
        System.out.println("return add is " + add(17,18));
    }         /*$B?tCM$rJV$9(Bint$B7?%a%=%C%I(Badd$B$r8F$S=P$7!"(BSystem.out..$B$GI=<($9$k(B*/
    
    public static void demo_object() {
        double area;
        CircleC obj;                    /*$B%/%i%9(BCircleC$B$N%*%V%8%'%/%HJQ?t@k8@(B*/
        obj = new CircleC();                    /*CircleC$B$N%*%V%8%'%/%H$r@8@.(B*/
        area = obj.circle(10);  /*$B@8@.$7$?%*%V%8%'%/%HFb$N%a%=%C%I$r8F$S=P$7(B,*/
        System.out.println("area = " + area);    /*            $B0z?t$rM?$($k!#(B*/
    }

    public static void method_add(int x, int y) {   /* $BM?$($i$l$?0z?t$r=hM}(B*/
        int z;                                   /*$B$7$F$=$N7k2L$rJ8;z$K$7$F(B*/
        z = x + y;                                      /* $BI=<($9$k%a%=%C%I(B*/
        System.out.println("x + y = " + z);
    }

    public static int add(int x, int y) {       /*$BM?$($i$l$?0z?t$r=hM}$7$F!"(B*/
        int z;                                  /*$B$=$N7k2L$rJV$9%a%=%C%I!#(B  */
        z = x + y; 
        return z;
    }
}