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      1. Ӌ(j)C(j)(j)(sh)֪R(sh)c(din)

        r(sh)g2024-09-05 17:01:02 Ӌ(j)C(j)ȼ(j) ҪͶ
        • P(gun)]

        2017Ӌ(j)C(j)(j)(sh)֪R(sh)c(din)

        ȫ(gu)Ӌ(j)C(j)ȼ(j)ԇȫ(gu)y(tng)һ}y(tng)һԇPԇϙC(j)ԇY(ji)ϵʽСxӋ(j)C(j)(j)(sh)֪R(sh)c(din)gӭ!

        2017Ӌ(j)C(j)(j)(sh)֪R(sh)c(din)

        Ӌ(j)C(j)(j)(sh)֪R(sh)c(din)

        1)Y(ji)(gu)N: Y(ji)(gu) , ѭh(hun)Y(ji)(gu)((g)ѭh(hun)Y(ji)(gu)), xY(ji)(gu)(if switch)

        2)xҪmain(), Ȼx(ѭh(hun)ѭh(hun),xx)

        3)Ӌ(j)C(j)Ĕ(sh)(j)Xб M(jn)Ƶʽ. (sh)(j)ŵλþ ĵַ.

        4)bitλ ָ0 1 byte ָֹ(ji), һ(g)ֹ(ji) = ˂(g)λ.

        5)һҪӛס M(jn) ΄ ʮM(jn)

        ģ

        1gA(y)̎CZ(y)Եһ\(yn)Еr(sh)gCZ(y)ԾgijQԴASCII(sh)ֵıļ

        2ÿ(g)CZ(y)Գmain(sh)ֻһ(g)

        3ں(sh)вٶx(sh)

        4㷨һҪݔԛ](mi)ݔ

        5breakѭh(hun)Y(ji)(gu)switchZ(y)

        6̖(ho)\(yn)ļ(j)e

        һ

        1)ϷÑ(bio)R(sh)飺

        ϷҪĸ(sh)„MԪؾe(cu)

        ҵһ(g)횞ĸt„һ(g)锵(sh)־e(cu)ˡ

        P(gun)IֲÑ(bio)R(sh)̖(ho)main define scanf printf P(gun)IԻĵطIfǿÑ(bio)R(sh)?yn)Ifеĵһ(g)ĸ(xi)ˣԲP(gun)I

        2)(sh)͔(sh)(j)ĺϷʽ

        2.333e-1 ǺϷҔ(sh)(j)2.333×10-1

        ԇEeǰeД(sh)e؞(sh).

        3)ַ(sh)(j)ĺϷʽ:

        '1' ַռһ(g)ֹ(ji)"1"ַռɂ(g)ֹ(ji)(һ(g)Y(ji)̖(ho))

        '0' ASCII(sh)ֵʾ48'a' ASCII(sh)ֵ97'A'ASCII(sh)ֵ65

        4) һǃɂ(g)ֹ(ji), ַһ(g)ֹ(ji)pһ4(g)ֹ(ji)

        ԇr(sh)һ(hu)f(shu)16λgϵy(tng)32λϵy(tng)@NrҪȥһ}һǃɂ(g)ֹ(ji), ַһ(g)ֹ(ji)pһ4(g)ֹ(ji)Ϳˡ

        5)D(zhun)xַĿ飺

        ڳ int a = 0x6dǰһ(g)ʮM(jn)ƵĔ(sh)o׃a ע@0x횴

        ڳ int a = 06d, һ(g)M(jn)Ƶʽ

        D(zhun)xַ’\x6d’ ǺϷģ0܌(xi)xС(xi)

        ‘\141’ ǺϷģ 0Dz܌(xi)

        ‘\108’ǷǷ?yn)鲻ԳF(xin)8

        6)g(sh)\(yn)̖(ho)ă(yu)ȼ(j)e

        ͬ(j)eеǏңеǏҵ

        7)(qing)D(zhun)Q

        һ (int)a int(a)עһ̖(ho)ġ

        ע(int)(a+b)(int)a+b ą^(q)e ǰǰa(b)+bD(zhun)ͣǰa(b)D(zhun)ټb

        8)_(d)ʽĿ飺

        DZ_(d)ʽһД(sh)ֵ

        xֵ_(d)ʽ_(d)ʽ(sh)ֵ߅Ĕ(sh)ֵa=b=5;ԓ_(d)ʽ5xֵ

        ԼӡԜp_(d)ʽO(sh)a=5++a(Ǟ6) a++(5);

        \(yn)еęC(j)++a Ȱ׃Ĕ(sh)ֵ1ȻѵõĔ(sh)ֵŵ׃aУȻ@

        (g)++a_(d)ʽĔ(sh)ֵ6a++ԓ_(d)ʽĔ(sh)ֵ5Ȼٰa(b)Ĕ(sh)ֵ16

        ٷŵ׃aС M(jn)++aa++ijõaԒ׃aе6

        ԇE++ǰȼӺ++ںú

        ̖(ho)_(d)ʽ(yu)ȼ(j)e ;_(d)ʽĔ(sh)ֵ̖(ho)߅ǂ(g)_(d)ʽĔ(sh)ֵ

        (234)ı_(d)ʽĔ(sh)ֵ4

        9)λ\(yn)Ŀ飺

        (hu)һ}ԇ}Ŀ

        ̎׺еλ\(yn)}ĿҪ@(g)́(li)̎(ȰʮM(jn)׃ɶM(jn)׃ʮM(jn))

        1char a = 6, b;

        b = a<<2; @N}ĿӋ(j)Ҫa(b)ʮM(jn)6ɶM(jn)λ\(yn)

        2һҪӛס

        3ڛ](mi)ȥ(sh)(j)ĕr(sh)<<һλʾ2;>>һλʾ2

        10)018Ĕ(sh)ֵǷǷģM(jn)Ǜ](mi)88M(jn)1

        11)%̖(ho)߅Ҫ(sh)(sh)e(cu)ˡ

        12)NȡGС(sh)r

        1int a =1.6;

        2(int)a;

        ڶ

        1)printf(sh)ĸʽ飺

        %d(du)(yng);%c(du)(yng)ַ;%f(du)(yng)ξȵȵȵģ(du)R

        %ld(du)(yng) long int;%lf (du)(yng)double

        2)scanf(sh)ĸʽ죺

        עԓ(sh)ĵڶ(g)&a @ӵĵַa;

        Scanf(“%d%d%*d%d”,&a,&b,&c); ^(gu)ݔĵ(g)(sh)(j)

        3)putchar ,getchar (sh)Ŀ飺

        char a = getchar() Ǜ](mi)Ѕ(sh)IP(pn)õݔһ(g)ַo׃a

        putchar(‘y’)ַyݔĻС

        4)Ό(sh)F(xin)ɂ(g)׃x yД(sh)ֵĻQ(Ҫ(li))

        ԰ x=y ,y=x; Ҫg׃ t=x;x=y;y=t

        5)Ό(sh)F(xin)λС(sh)λij(Ҫ(li))

        @(g)ƏVxע x = (int)x @ǰС(sh)ȥ

        ؄eҪע⣺cZ(y)÷0ʾ߉݋0ʾ߉݋ٵġ

        1)P(gun)ϵ_(d)ʽ

        _(d)ʽĔ(sh)ֵֻܞ1(ʾ)0(ʾ)

        (dng)P(gun)ϵı_(d)Ǟĕr(sh)õ1 9>8@(g)Ա_(d)ʽĔ(sh)ֵ1;

        2)߉݋_(d)ʽ

        ֻܞ1(ʾ)0(ʾ)

        a) && || ! N߉݋\(yn)̖(ho)

        b) !>&&>|| (yu)ȵļ(j)e

        c) ע·F(xin)ԇ^ϲg

        d) Ҫʾ x DZ010Сķ0

        3)if Z(y)

        else cӽifқ](mi)elseMϵ

        4)l_(d)ʽ

        _(d)ʽ1 ?_(d)ʽ2 _(d)ʽ3

        עǮ(dng)0r(sh)DZ_(d)ʽ2Ĕ(sh)ֵ(dng)0ǾDZ_(d)ʽ2Ĕ(sh)ֵ

        ԇEǰٺ

        5)switchZ(y)䣺

        a)һҪע break ͛](mi)breakIJe(sh)(34(y))ăɂ(g)](mi)breakr(sh)ֻҪһ(g)caseƥʣµĶҪ(zh)УbreaktֱswicheZ(y)

        b)switchֻԺbreakһԺcontinue

        1)Nѭh(hun)Y(ji)(gu)

        a)for() ; while(); do- while()N

        b)forѭh(hun)(dng)бǃɂ(g)̖(ho)ǧf(wn)Ҫӛ

        c)(xi)ĕr(sh)һҪעѭh(hun)һҪнY(ji)ėltѭh(hun)

        d) do-while()ѭh(hun)һ(g)while();ķ̖(ho)һ܉G((dng)ϙC(j)e(cu))

        2) break continueIJe

        ӛ

        breakǴƵ˼((g)ѭh(hun))ԿҊ(jin)break˳?zhn)һѭh(hun)

        continue^m(x)˼(^m(x)ѭh(hun)\(yn))ҪY(ji)ѭh(hun)ѭh(hun)w(ni)ʣµZ(y)䲻و(zh)ѭh(hun)_(ki)ʼȻДѭh(hun)lM(jn)һ݆ѭh(hun)

        3)Ƕѭh(hun)

        ѭh(hun)߀ѭh(hun)@N^(f)sҪһһһһĵ`Ӌ(j)һӛסɌ̎S(sh)M

        4) while((c=getchar())!=’\n’) while(c=getchar() !=’\n’)IJe

        ȿa = 3 != 2 (a=3)!=2 ą^(q)e

        (!=̖(ho)ļ(j)e=̖(ho) Եһ(g)Ӌ(j) 3!=2) һ(g)aĔ(sh)ֵǵõ1;ڶ(g)aĔ(sh)ֵ3

        ԇעc(din): ̖(ho)@Ҫԡ

        (sh)Ǿһܵһ(g)K;

        1) (sh)ą(sh)?ci)?sh)ֵ(ʾD)

        main()

        {

        int a = 5,b=6,c;

        c = add(a,b);

        printf(“%d”,c);

        }

        {(dio)ú(sh)

        a,bnj(sh)

        (g)(sh)õһ(g)(sh)ֵ

        Add(sh)ķ?ci)?sh)ֵ

        int add ( int x, int y)

        {

        int z;

        z=x+y;

        return z;

        }

        {(dio)ú(sh)

        xyʽ(sh)

        (sh)?ci)?sh)ֵ

        z@(g)add(sh)Ӌ(j)õĽY(ji)Ǻ(sh)ؽoķ?ci)?sh)ֵ

        ڏ(zh)(dng)˺(sh)add󣬰a(b)bĔ(sh)ֵo{(dio)ú(sh)򕺕r(sh)Дȴ?ci)?sh)ֵ(dng)?sh)õ˷ؔ(ci)?sh)ֵˆ(zh)

        2)һҪעⅢ(sh)֮gĂf

        (sh)΅֮g (sh)ֵַ͂IJe(ԇc(din))

        (sh)ֵԒ΅׃(hu)׃(sh)׃

        ַԒ΅׃͕(hu)пܸ׃(sh)׃

        3)(sh)•Ŀ飺

        һҪУ(sh)(sh)ķ(sh)ą(sh)

        һҪУ΅Q

        ָ׃ı|(zh)Á(li)ŵַһ׃ǷŔ(sh)ֵ

        int *p *ppIJe

        *pԮ(dng)׃(li);*ȡַpĔ(sh)ֵ

        pǮ(dng)ַ(li)ʹá

        *p++ (*p)++֮gIJee(cu)}ĿкҪ

        *p++ ַ(hu)׃

        (*p)++ ǔ(sh)ֵ(hu)Ҫ׃

        x(ԇc(din))

        (sh)Mʾһ(g)Ԫصĵַ(sh)MԼǵַ(˺ܶ)

        (sh)ʾԓ(sh)ڵַ

        ַʾһ(g)ַĵַ

        1һS(sh)MҪ

        (du)a[10]@(g)(sh)MӑՓ

        1aʾ(sh)Mǵһ(g)ԪصĵַҲԪa[10]ĵַ

        2aǵַֻҪF(xin)a++a=a+2xֵĶe(cu)`ġ

        3aһS(sh)MָᘣҲf(shu)a+1һ

        (du)a[3][3]ӑՓ

        1aʾ(sh)Mǵһ(g)ԪصĵַҲԪa[10]ĵַ

        2aǵַֻҪF(xin)a++a=a+2xֵĶe(cu)`ġ

        3aǶS(sh)MָᘣҲf(shu)a+1һ

        4a[0]a[1]a[2]ҲǵַԌ(du)M(jn)xֵͬr(sh)ָa[0]+1a[1]+1a[2]+1һ

        5עaa[0] a[1]a[2]DzͬĻDzͬġǰһԪһԪء

        S(sh)M}Ŀļɣ

        a[3][3]={1,2,3,4,5,6,7,8,9}@ӵ}Ŀ

        Eһ(xi)ɣ

        һСڶС

        a[0]à 1 2 3 ->һ

        a[1]à 4 5 6 —>ڶ

        a[2]à 7 8 9 ->

        E@}Ŀgܺ(jin)Σ

        *(a[0]+1)҂֪ǵһеĵһ(g)Ԫһô@a[0][1]Ԫ1

        *(a[1]+2)҂֪ǵڶеĵһ(g)ԪСô@a[1][2]Ԫ6

        һӛֻҪǶS(sh)M}Ŀһnj(xi)ϵĸʽȥ}Ŀ@ӕ(hu)^(jin)

        (sh)MijʼһSͶSһSԲ(xi)Sڶ(g)һҪ(xi)

        int a[]={12} Ϸ int a[][4]={234}Ϸ int a[4][]={234}Ƿ

        S(sh)Mеָ

        int a[1][2];

        aF(xin)ھһ(g)ָa+1һД(sh)MԪ (*)p[2]ָ

        a[0]a[1]F(xin)ھһ(g)ָa[0]+1 һ(g)(sh)MԪ*p[2]ָᘔ(sh)Mʹ

        ߀ӛסÓ·t

        a[2] ׃ *(a+2) a[2][3]׃ *(a+2)[3]ٿ׃ *(*(a+2)+3)

        @(g)˼Ҫ!

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