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      《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案

      時(shí)間:2017-04-28 13:59:52 C語(yǔ)言答案 我要投稿

      《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案

        C語(yǔ)言是一種計(jì)算機(jī)程序設(shè)計(jì)語(yǔ)言。蘇小紅著寫的《C語(yǔ)言程序設(shè)計(jì)》這門教程,課后練習(xí)題的答案是什么呢?今天就讓小編來(lái)告訴你。

        《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案(第二章)

        2.2 #include<stdio.h>

        main()

        {

        float x=2.5,y=2.5,z=2.5;

        printf("x=%f\n",x);

        printf("y=%f\n",y);

        printf("z=%f\n",z);

        }

        《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案(第三章)

        3.1(1) #include<stdio.h>

        main()

        {

        int a=12,b=3;

        float x=18.5,y=4.6;

        printf("%d\n",(float)(a*b)/2);

        printf("%d\n",(int)x%(int)y);

        }

        3.2 #include<stdio.h>

        main()

        {

        int x,b0,b1,b2,s;

        printf("Inputx:");

        scanf("%d",&x);

        b2=x/100;

        b1=(x-b2*100)/10;

        b0=x%10;

        s=b0*100+b1*10+b2;

        printf("s=%d\n",s);

        }

        3.3 #include<stdio.h>

        #include<math.h>

        main()

        {

        float rate=0.0225;

        float n,capital,deposit;

        printf("Input n,capital:");

        scanf("%f,%f",&n,&capital);

        deposit=capital*pow(1+rate,n);

        printf("deposit=%f\n",deposit);

        }

        3.4 #include<stdio.h>

        #include<math.h>

        main()

        {

        float a,b,c;

        double x,y;

        printf("Inputa,b,c:");

        scanf("%f,%f,%f",&a,&b,&c);

        x=(-b+sqrt(b*b-4*a*c))/(2*a);

        y=(-b-sqrt(b*b-4*a*c))/(2*a);

        printf("x=%f,y=%f\n",x,y);

        }

        《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案(第四章)

        4.1(1) #include<stdio.h>

        main()

        {

        char c1='a',c2='b',c3='c';

        printf("a%cb%cc%c\n",c1,c2,c3);

        }

        4.1(2) #include<stdio.h>

        main()

        {

        int a=12,b=15;

        printf("a=%d%%,b=%d%%\n",a,b);}

        4.1(3) #include<stdio.h>

        main()

        {

        int a,b;

        scanf("%2d%*2s%2d",&a,&b);

        printf("%d,%d\n",a,b);}

        4.2 #include<stdio.h>

        main()

        {

        long a,b;

        float x,y;

        scanf("%d,%d\n",&a,&b);

        scanf("%f,%f\n",&x,&y);

        printf("a=%d,b=%d\n",a,b);

        printf("x=%f,b=%f\n",x,y);}

        《C語(yǔ)言程序設(shè)計(jì)》蘇小紅著課后答案(第五章)

        5.1 #include<stdio.h>

        main()

        {

        float a;

        printf("Innputa:");

        scanf("%f",&a);

        if(a>=0)

        {a=a;printf("a=%f\n",a);}

        else

        {a=-a;printf("a=%f\n",a);}

        }

        5.2 #include<stdio.h>

        main()

        {

        int a;

        printf("Inputa:");

        scanf("%d",&a);

        if(a%2==0)

        {

        printf("a 是偶數(shù)");

        }

        else

        {printf("a 是奇數(shù)");}

        }

        5.3 #include<stdio.h>

        #include<math.h>

        main()

        {

        float a,b,c,s,area;

        printf("Inputa,b,c:");

        scanf("%f,%f,%f",&a,&b,&c);

        if(a+b>c&&a+c>b&&b+c>a)

        {

        s=(a+b+c)/2;

        area=(float)sqrt(s*(s-a)*(s-b)*(s-c));

        printf("area=%f\n",area);

        }

        else

        {printf("不是三角形");}

        }

        5.4 #include<stdio.h>

        #include<math.h>

        main()

        {

        float a,b,c,x,y;

        printf("Inputa,b,c:");

        scanf("%f,%f,%f",&a,&b,&c);

        if(a==0)

        {

        printf("該方程不是一元二次方程\n");

        }

        if(b*b-4*a*c>0)

        {

        x=(-b+sqrt(b*b-4*a*c))/(2*a);

        y=(-b-sqrt(b*b-4*a*c))/(2*a);

        printf("x=%f,y=%f\n",x,y);

        }

        else if(b*b-4*a*c==0)

        {

        x=-b/(2*a);

        y=-b/(2*a);

        printf("x=%f,y=%f\n",x,y);

        }

        else

        {printf("該方程無(wú)實(shí)根\n");}

        }

        5.5 #include<stdio.h>

        main()

        {

        int year,flag;

        printf("Input a year:");

        scanf("%d",&year);

        if(year%4==0&&year%400!=0||year%400==0)

        {flag=1;}

        else

        {flag=0;}

        if(flag==1)

        {printf("%d is a leap year !\n",year);}

        else

        {printf("%d is not a leap year !\n",year);}

        }

        5.6 #include<stdio.h>

        main()

        {

        int year,flag;

        printf("Input a year:");

        scanf("%d",&year);

        flag=year%400==0||year%4==0&&year%100!=0?1:0;

        if(flag==1&&flag!=0)

        {

        printf("%d is a leap year !\n",year);

        }

        else

        {printf("%d is not a leap year !\n",year);}

        }

        5.7 #include<stdio.h>

        main()

        {

        char ch;

        printf("Inputch:");

        scanf("%c",&ch);

        if(ch>='a'&&ch<='z')

        {

        ch=getchar();

        ch=ch-32;

        printf("%c,%d\n",ch,ch);

        }

        else if(ch>='A'&&ch<='Z')

        {

        ch=getchar();

        ch=ch+32;

        printf("%c,%d\n",ch,ch);

        }

        else

        {printf("%c",ch);}

        }

        5.8 #include<stdio.h>

        main()

        {

        char ch;

        printf("Inputch:");

        scanf("%c",&ch);

        if(ch>=48&&ch<=57)

        {printf("ch 是數(shù)字字符\n");}

        else if(ch>=65&&ch<=90)

        {printf("ch 是大寫字母\n");}

        else if(ch>=97&&ch<=122)

        {printf("ch 是小寫字母\n");}

        else if(ch==32)

        {printf("ch 是空格\n");}

        else

        {printf("ch 是其他字符\n");}

        }

        5.9 #include<stdio.h>

        main()

        {

        int score,grade;

        printf("Input score:");

        scanf("%d",&score);

        grade=score/10;

        if(score<0||score>100)

        {printf("Input error\n");}

        if(score>=90&&score<=100)

        {printf("%d--A\n",score);}

        else if(score>=80&&score<90)

        {printf("%d--B\n",score);}

        else if(score>=70&&score<80)

        {printf("%d--C\n",score);}

        else if(score>=60&&score<70)

        {printf("%d--D\n",score);}

        else if(score>=0&&score<60)

        {printf("%d- -E\n",score);}

        }

        5.10 #include<stdio.h>

        main()

        {

        int year,month;

        printf("Input year,month:");

        scanf("%d,%d",&year,&month);

        if(month>12||month<=0)

        {printf("error month\n");}

        else

        {

        switch(year,month)

        {

        case 12:

        case 10:

        case 8:

        case 7:

        case 5:

        case 3:

        case 1:

        printf("31 天\n");

        break;

        case 11:

        case 9:

        case 6:

        case 4:

        printf("30 天\n");

        break;

        case 2:

        if(year%4==0&&year!=0||year%400==0)

        {printf("29 天\n");}

        else

        {printf("28 天\n");}

        break;

        default:

        printf("Input error\n");}}}


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