（中职）C语言程序设计课后习题参考答案（模块2-12）

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1、C语言程序设计课后习题参考答案（模块2-12）l.#include main()printf(school student study);getch();2.#include main()printf(/z*nw);printf(*n);printf(z/*nw)；printf(*n);printf(八n);getch();3.#include int sum(int x,int y)return x+y;main()int x,y;scanf(%d%d,&x/&y);printf(%d/sum(x/y);getch();一、选择题l.C 2,C 3.A 4.C 5,C二、根据前面所学的关于变

2、量定义和格式控制等的相关知识，指出下面程序的错误，修改后上机调试。l.#include 2.#define N 3.144.char*name=Lucy;5.int x_ l;float x_ 2=3/x_ 3=4;short s;7.scanf(%cT,&x_ l);10.printf(/z%szs result is:,name);l l .printf(/,x_ l=%d/s=%dnw,x_ l,s);三、指出下列print*)函数的输出结果1.65535,-1 2.12 3.a 4.0 5.ffff 6.2.100000 7.2.800000e+008.2.8 9.c 10.65 ll

3、.a 12.abcd 13.student 14.0 x15 15.0142lG.good 17.3.1416一、选择题l.A 2,B 3.D 4.D 5.B 6.A 7.D 8.B 9.A 10.B ll.B 12.D13.D 14.B 15.A二、填空题&a,&b,&c(a+b+c)/3 s=80|(a=80&b=80&c=80)三、程序分析l.a=5,x=6 2.a=6,b=0,c=12 3.10 4.-1 5.c=14 6.a=0,b=0,c=l四、程序分析填空题&k 5 2k&k=10 1.5*k+2 2*k-3五、程序设计实践1.#includemain()int n,x,y,z;

4、scanf(%d,&n);while(l)if(n=1000)printf(请输入三位数n);scanf(%d&n);else break;if(n=100&n1000)x=n/100;y=n%100/10;z=n%100%10;printf(x=%d,y=%d,z=%d,x,y/z);)elseprintf(请输入3位数广)；getch();2.#include#include main()char ch10=Beijin;int i;for(i=0;i=x&chi=X,&chi=Z,)chi=chi-23;elsechi=chi+3;puts(ch);getch();)一、写出下列程序的输

5、出结果1.3 2.63 3.6 4.10 8 6 4 2 5.*#*6.k=6,k=-l 7.864208.x=ll,i=10 9.x=10,i=610.*二、程序填空1.0 sum+=l2.。1 8-i-j3.flag(x-l)%5=0&(x+l)%6=0&(x+3)%7=0&(x-l)%ll=0。4.i%10 i%100/10 i/100 g*g*g+s*s*s+b*b*b=i三算法分析与编程1.#include main()long i=10000;int j,count=0;while(i100000)j=i%10;if(j=6&i%3=0)count+;i+；printf(%d”,c

6、ount);getch();2.#include main()int a,b,c;scanf(%d%d,&a/&b);if(ab)c=a*a+a*b-6;else if(a=b)c=2*a*b*b;elsec=a*a-2*b+6;printf(c=%d,c);getch();3.#include main()float a,b,c;char ch;scanf(%f%c%f/&az&ch,&b);while(l)(if(b=O&ch=7，)(printf(分母不能为零，请重输!n);scanf(%f%c%f,&az&ch,&b);)elsebreak;)switch(ch)(case+:c=a+

7、b;break;case-:c=a-b;break;case*:c=a*b;break;case/:c=a/b;break;default:printf(请输入+,-,*,/);break;printf(%g,c);getch();4.#include main()float a,pf;int j;scanf(%fz&pf);while(l)if(pf0&pf10&pf20&pf=40)j=3；elsej=4;switch(j)case l:a=pf*0.1;break;case 2:a=10*0.1+(pf-10)*0.075;break;case3:a=10*0.1+10*0.075+(p

8、f-20)*0.05;break;default:a=10*0.1+10*0.075+20*0.05+(pf-20)*0.03;)printf(%g,a);getch();5.#include main()float x,xl=0;int i;for(i=5;i 0;i-)x=(xl+1000)/(l+0.0063*12);xl=x;)printf(%g 万,x);getch();)6.#include main()int a,b,c,count=0;for(a=l;a20;a+)for(b=l;b32;b+)for(c=l;c=100;c+)if(a*5+b*3+c/3.0=100)&(a+

9、b+c=100)(printf(a=%d,b=%d,c=%d,%gn/a,b/c,a*5+b*3+c/3.0);count+;printf(有%d 种方法，count);getch();)一、选择题l.D 2,D 3.C 4.D 5.B 6.B 7.B二、填空题l.-l 2.ch=6,ck=5 3.9 4.4 5.while-when 6.19 7.al0三、程序填空1.i=j|i+j=2 sum+aij2.aj%ai=O ai!=O 03.j+a i+l aj=bk四、算法分析与编程1.#include main()inta,b5;int i,j,max,t;for(i=0;i4;i+)ma

10、x=-32768;for(j=0;jmax)max=aij;bi=max;)for(i=0;i4;i+)for(j=0;j bj+l)t=bj;bO=bj+l;bj+l=t;for(i=0;i4;i+)printf(%dt,bi);getch();2.#include main()int a10;int max=-32768,max2=-32768,i;for(i=0;imax)max=ai;)for(i=0;imax2&ai!=max)max2=ai;)printf(最大值=%d,次大值=%cT,max,max2);getch();)3.#include main()int a=l,b=l,

11、c;int i;for(i=3;i=10;i+)c=a+b;a=b;b=c;printf(%d,c);getch();4.#include#include main()char t10,s510=C hina,America,FrancezEnglish，7,German;int ij;for(i=0;i5;i+)for(j=0;j0)strcpy(t,sj);strcpy(sj,sj+l);strcpy(sj+l,t);for(i=0;i5;i+)printf(%sn,si);getch();一、指出下列程序的运行结果1.1 3 6 2.-5-4-1 3.10 4.s=16 5.12 6.8

12、1012 7.9 8.34389.678二、程序设计1.#include long f(int n);long fun(int n)if(n=l|n=0)return 1;elsereturn fun(n-l)+f(n);long f(int n)if(n=l)return 1;elsereturn f(n-l)*n;main()int i;scanf(%d,&i);printf(%ld,fun(i);getch();2.#include main()int a12=31/28,31,30,31,30,31,31,30,31,30,31；int year,month,day,sum=0,i,f

13、lag=0;scanf(%d%d%d,&year/&month/&day);while(l)if(year=0|month12|day31|(month=2&day29)printf（请输入正确的年月日rT）;scanf(%d%d%d,&year,&month,&day);else break;if(year%4=0&year%100!=0)11year%400=0)flag=l;for(i=0;i2)sum+=l;printf(是本年的第d 天,sum);getch();)3.#include#include float fun(int a,int b)(if(b=O)return 1;el

14、se if(b 0#incude string.h)三、程序填空1.(D.gets(str2).maj.i=j.补充 ai+l=ai;aj=bk四、算法与编程1.#include#include main()char*t/*s5=C hina,America,France,English,German;int i,j;for(i=0;i5;i+)for(j=0;j 0)t=sj；sj=sj+L;sU+l=t;for(i=0;i5;i+)printf(%sn,si);getch();)2.#include#include main()(char*month12=January,February,

15、March,April,May,June,July/August,se ptember,October7November,D ecember);int i,n;scanf(%d,&n);while(l)if(n12)printf(错误!请输入1-12之间的整数n);scanf(%d,&n);)else break;)printffsmonthtn-l);getch();一、指出下面程序输出的结果L6,6,3,4,2.4144 3.0-7二、程序填空l.strcmp(b2.name,x)!=0&in2.im3.strcmp(xm/#/)=04.strcpy(si.namezxm)5.strcpy

16、(si.telephone,telph)三、程序设计l.#include struct course char name20;int data;char teacher20;a2=math,78；lmathteacher,English/7/Englishteacher;main()inti;printf(coursetscoretteachern)；for(i=0;i2;i+)printf(%st%dt%sn,ai.name,ai.data,ai.teacher);getch();#include struct date int year;int month;int day;a；main()

17、int day12=3：L,28,3L30,3：l,30,31,3L30,31,30,31;int sum=0,iJlag=0;scanf(%d%d%d,&a.year/&a.month/&a.day);while(l)if(a.year=011 a.month1211 a.day31)printf(请输入正确的年月日)scanf(%d%d%d,&a.yearz&a.month,&a.day);)else break;if(a.year%4=0&a.year%100!=0)|a.year%400=0)flag=l;for(i=0;i 2)sum+=l;printf(是本年的第d天，sum);g

18、etch();一、指出下面程序输出的结果1.30 2.6 3.11 4.15 5.2 416 6.314.000000二、程序设计1.#include#include#define S(a,b,c)(a+b+c)/2)#define AREA(s,a,b,c)sqrt(s*(s-a)*(s-b)*(s-c)main()float a,b,c;scanf(%f%f%fz&a/&b,&c);printf(%gn,S(a,b,c);printf(%g,AREA(S(a,b,c),a,b,c);getch();)2.#include#include#define C HANGEmain()char c

19、h100;intij;gets(ch);#ifdef C HANGEfor(i=0;i=97&chi122)chi=chi+l;if(chi=122)chi=a;)printf(%s;ch);#elseprintf(%s,ch);#endifgetch();)3.#include#define R(x)(x%4=0&x%100!=0)|x%400=0)main()int year;scanf(%d,&year);if(R(year)=l)printf(闰年)elseprintf(平年)getch();)1.h n l p-next q-next p-next(6)p-code h n2.h-n

20、ext t-next p-next head-next!=NULL head-next(6)head!=t head p q-next3.(D pl-num=m pl(3)p-next=pl pl-next4.h pl p p2-next一、选择题l.B 2.B 3.B 4.D 5.D二、程序填空1.fputc()、fputs()fprintf。、fw rite()fgetc()、fgets()fscanf()fread()2.(D r fgetc(fp)count+q-next fclose(fp)3.w(2)(ch=getchar()ch,fp三、程序设计l.#include#includ

21、e main()FILE*fp;char ch;int I;fp=fopen(d:test.txt,w+);while(ch=getchar()!=,!/)if(ch=97&ch=122)ch=ch-32;fputc(chjp);fclose(fp);getch();2.#include#include main()FILE*fp;char ch;int x,i;fp=fopen(d:test.dat,w+);for(i=l;i=3;i+)scanf(%d，&x);fprintf(fp,%d,x);)rewind(fp);while(!feof(fp)ch=fgetc(fp);putchar(ch);fclose(fp);getch();)