C语言程序设计张淑华、朱丽莉版课后习的题目参考详解

实用标准文案语言程序设计（张淑华、朱丽莉主编）课后习题解答（仅供参考）习题一一、选择题1．B2．D3．B4．A5．B6．C7．C二、填空题1．.obj2．函数3．/**/4．#include<stdio.h>inta,b;a,b三、简答题(略)习题二一、选择题1．B2．B3．A4．D5．A6．C7．C8．A9．C10．B11．A12．A13．C14．A15．C二、填空题1．变量2．存储数据的单元3．非0、04．(1)a>=0(2)05．16．17．-308．389．4,710．-617777211．9.912．7三、写出下列程序的运行结果1．0，0，5 2．18 3．64 512 8 4．55．d4,c四、编程题精彩文档实用标准文案1．#include<stdio.h>#definePI3.1415926voidmain(){floatr,s;printf( “Pleaseinputcircinalradii\n ”);scanf(“%f”,&r);s=PI*r*r;printf( “r=%.2f,s=%.2f\n ”,r,s);}2．#include<stdio.h>voidmain(){charc1,c2;printf( “Pleaseinputamajuscule\n ”);scanf(“%c”,&c1);c2=c1> ’A’&&c1< ’Z’?c1+32:c1;printf( “%c\n”,c2);}3．#include<stdio.h>voidmain(){inta=0,b;scanf(“%c”,&b);b=b&a;精彩文档实用标准文案printf( “b=%d\n ”,b);}习题三一、选择题1．C2．C3．A4．C5．D6．原题第2行应为c=(c-=a-5),(a=b,b+3);答案为B否则输出结果为5,0,57．D8．C9．A10．B二、填空题1．-50300、a=-50,b=300a=-50 b=3002．102030、10,20,30、a=10,b=20,c=303．15、0、0三、写出下列程序的运行结果1．a=789.654321,a=789.65,a=789.65432100,a=789.6543212．b=15,b=17,b=f3．c=1,x=0,y=0,z=14．2120,205．在TC环境下为216,125在VC环境下为216,1806．a=A,b=d,c=F7．9,4,12,128．x=4.500000,y=4,x+y=8.500000四、编程题1．#include<stdio.h>voidmain()精彩文档实用标准文案{printf("**********************************\n");printf(" HAPPYNEWYEAR! \n");printf("**********************************\n");}．#include<stdio.h>voidmain(){inta=5,b=8,c=10,m,max;m=a>b?a:b;max=c>m?c:m;printf( “max=%d\n ”,max);}(2)#include<stdio.h>voidmain(){inta,b,c,m,max;scanf("%d,%d,%d",&a,&b,&c);max=a>b?a:(b>c?b:c);printf(“max=%d\n ”,max);}习 题 四一、选择题精彩文档实用标准文案1．D2．D3．C4．A5．D6．A7．C8．C9．D10．B二、填空题1．6、5、5 2．(a%3==0||a%7==0) 3．(1)a>b (2)a=c; (3)a,b,c三、写出下列程序的运行结果1．4 2．64 3．a=7,b=4 4．46 46 5．*#46四、编程题1．另见填空题 3#include<stdio.h>voidmain(){floata,b,c,t;scanf("%f,%f,%f",&a,&b,&c);if(a>b){t=a;a=b;b=t;}if(a>c){t=a;a=c;c=t;}if(b>c){t=b;b=c;c=t;}printf(“%.2f,%.2f,%.2f\n”,a,b,c);}2．#include<stdio.h>精彩文档实用标准文案voidmain(){inta,b;scanf("%d,%d",&a,&b);if(a%b==0)printf( “%disdivisibleby%d\n ”,a,b);elseprintf( “%disnotdivisibleby%d\n ”,a,b);}3．(1)#include<stdio.h>voidmain(){intx,y;scanf(“%d”,&x);if(x>-5&&x<0)y=x;printf("y=%d\n",y);elseif(x==0)y=x-1;printf("y=%d\n",y);elseif(x>0&&x<10)y=x+1;printf("y=%d\n",y);else精彩文档实用标准文案printf("Dataoutofrange\n");}(2)#include<stdio.h>voidmain(){intx,y;scanf(“%d”,&x);switch(x){case-1:case-2:case-3:case-4:y=x;printf("y=%d\n",y);break;case0:y=x-1;printf("y=%d\n",y);break;case1:case2:case3:case4:case5:case6:case7:case8:case9:y=x+1;printf("y=%d\n",y);break;default:printf("Dataoutofrange\n");精彩文档实用标准文案}4．#include<stdio.h>voidmain(){longnum;int indiv,ten,hundred,thousand,tenthousand,place; /*分别代表个位、十位、百位、千位、万位和位数 */printf(“PleaseInputainteger(0~99999): ”);scanf(“%ld”,&num);if(num>9999)place=5;elseif(num>999)place=4;elseif(num>99)place=3;elseif(num>9)place=2;elseplace=1;printf(“place=%d\n ”,place);printf(“Foreachdigit: ”);tenthousand=num/10000;精彩文档实用标准文案thousand=(int)(num-tenthousand*10000)/1000;hundred=(int)(num-tenthousand*10000-thousand*1000)/100;ten=(int)(num-tenthousand*10000-thousand*1000-hundred*100)/10;indiv=(int)(num-tenthousand*10000-thousand*1000-hundred*100-ten*10);switch(place){case1:printf( “%d”,indiv);break;case2:printf( “%d,%d”,ten,indiv);break;case3:printf( “%d,%d,%d ”,hundred,ten,indiv);break;case4:printf( “%d,%d,%d,%d ”,thousand,hundred,ten,indiv);break;case5:printf( “%d,%d,%d,%d,%d ”,tenthousand,thousand,hundred,ten,indiv);}}习题五一、选择题1．D2．C3．D4．B5．C6．B7．C8．B9．B10．B二、填空题1．(1)x>=0或!(x<0)(2)x<amin2．(1)i<10或i<=9(2）j%3或j%3!=03．(1)pi(2)fabs(t)(3)4精彩文档实用标准文案三、写出下列程序的运行结果1．12．y=-13．44．a=2,b=85．*76．457．18．s=03423四、编程题1．#include<stdio.h>voidmain(){inti,j,k;for(i=1;i<=4;i++) /*输出上面4行*号*/{for(j=1;j<=5-i;j++)printf( ““); /*输出*号前面的空格 */for(k=1;k<=2*i-1;k++)printf( “*”);/*输出*号*/printf( “\n”);/*输出完一行*号后换行*/}}2． #include"stdio.h"voidmain(){intnum,n1,n2,p=1;scanf("%d",&num);精彩文档实用标准文案while(num){n1=num/10;n2=num%10;p*=n2;num=n1;}printf("num=%d,p=%d\n",num,p);}3． #include"stdio.h"voidmain(){inti;floats1,s2,s3,s4,s5,sum,avg;for(i=1;i<=6;i++){printf("Pleaseenterafivesubjectsscore\n");scanf("%f,%f,%f,%f,%f",&s1,&s2,&s3,&s4,&s5);sum=0;sum+=s1+s2+s3+s4+s5;avg=sum/5;printf("%dindividuals,theaveragescoreis%.2f\n",i,avg);}}习 题 六精彩文档实用标准文案一、选择题1．D2．C3．D4．D5．B6．A7．C8．D9．A二、填空题1．地址常量2．非03．3．(1)j=9(2)j>=04．(1)0(2)65．(1)gets(temp);(2)strcpy(temp,str);6．(1)i<3(2)a[i][i]7．(1)&a[i](2)i%4==0(3)printf("\n:\");8．(1)s[i]>=48&&s[i]<=57或s[i]>='0'&&s[i]<='9'(2)d[j]=0;或d[j]='\0';三、写出下列程序的运行结果1．137152．s=153．584．115．706．how7．max=9,row=1,col=08．6,4,3,2,areyou?Iamfine四、编程题1．#include<stdio.h>#defineN10voidmain(){inta[32],x,k,r,i;printf(“Pleaseinputaninteger:\");k=-1;do{r=x%2;a[++k]=r;精彩文档实用标准文案x/=2;}while(x>=1);for(i=k;i>=0;i--)printf( “%1d”,a[i]);printf(“\n”);}2．#include<stdio.h>#defineN10voidmain(){inta[N+1]={10,20,30,40,50,60,70,80,90,100};intt1,t2,num,i,j;printf(“arraya:\n”);for(i=0;i<N;i++)printf( “%d”,a[i]);printf(“\n”);printf(“Insertdata: ”);scanf(“%d”,&num);if(num>a[N-1])a[N]=num;else{for(i=0;i<N;i++)精彩文档实用标准文案{if(a[i]>num){t1=a[i];a[i]=num;for(j=i+1;j<N+1;j++){t2=a[j];a[j]=t1;t1=t2;}break;}}}printf("Currentarraya:\n ”);for(i=0;i<N+1;i++)printf( “%5d\n”,a[i]);}3．#include<stdio.h>#defineN6voidmain(){inti,j,a[N][N];for(i=1;i<N;i++){a[i][i]=1;a[i][1]=1;}for(i=3;i<N;i++)for(j=2;j<i-1;j++)a[i][j]=a[i-1][j-1]+a[i-1][j];精彩文档实用标准文案for(i=1;i<N;i++){for(j=1;j<=i;j++)printf(“%5d”,a[i][j]);printf(”\n”);}}4． #include"stdio.h"voidmain(){chars[80],t[80],d;inti,j;printf("Pleaseenterastring:\n");gets(s);printf("delete?\n");d=getchar();for(i=j=0;s[i]!='\0';i++)if(s[i]!=d){t[j]=s[i];j++;}t[j]='\0';printf("%s\n",t);}5．#include"stdio.h"#defineN8精彩文档实用标准文案voidmain(){ints[N][3],i,j,k,m,t1;floata[N],sum,t2;for(i=0;i<N;i++){printf("Pleaseenterthe%d-ththreesubjectsscore\n",i);sum=0;for(j=0;j<3;j++){scanf("%d",&s[i][j]);sum+=s[i][ j];}a[i]=sum/3;}for(i=0;i<N-1;i++){k=i;for(j=i+1;j<N;j++)if(a[k]<a[ j])k=j;if(k!=i){for(m=0;m<3;m++){t1=s[i][m];s[i][m]=s[k][m];s[k][m]=t1;} /*交换整行的值 */t2=a[i];a[i]=a[k];a[k]=t2;}}精彩文档实用标准文案for(i=0;i<N;i++){printf("%d-th",i);for(j=0;j<N;j++)printf("%d",s[i][ j]);printf("%.2f\n",a[i]);}}习题七一、选择题1．C2．A3．B4．B5．A6．D7．C8．D9．C10．C二、填空题1．structSTRUt[20]; 2．x.x、x.y、、 3．4,8三、写出下列程序的运行结果1．6 2．0 3．4E5S 4．21 5．Zhao,m,85,90四、编程题1．#include"stdio.h"#defineN45structstudent{charname[20];charsex[7];intage;精彩文档实用标准文案intscore;}std[N];voidmain(){inti,max=0,rowi;for(i=0;i<N;i++){printf("Pleaseenterthedataofthe%d-thstudent:\n",i);printf("name:");scanf("%s",std[i].name);printf("sex:");scanf("%s",std[i].sex);printf("age:");scanf("%d",&std[i].age);printf("score:");scanf("%d",&std[i].score);if(max<std[i].score){max=std[i].score;rowi=i;}}printf("name:%s ",std[rowi].name);printf("sex:%s ",std[rowi].sex);printf("age:%d ",std[rowi].age);精彩文档实用标准文案printf("score:%d\n",std[rowi].score);}2．#include"stdio.h"#defineN5structstudent{charname[20];charsex[7];intscore;}std[N];voidmain(){inti,ml=0,fml=0;floatsum=0,avg;for(i=0;i<N;i++){printf("Pleaseenterthedataofthe%d-thstudent:\n",i);printf("name:");scanf("%s",std[i].name);printf("sex:");scanf("%s",std[i].sex);if(std[i].sex[0]=='m'||std[i].sex[0]=='M')ml+=1;elsefml+=1;精彩文档实用标准文案printf("score:");scanf("%d",&std[i].score);sum+=std[i].score;}avg=sum/N;printf("Thenumberofmalestudents:%d\n",ml);printf("Thenumberoffemalestudentsare:%d\n",fml);printf("Theaveragescoresare:%.2f\n",avg);}习 题 八一、选择题1．A2．C3．D4．A5．C6．A7．D二、填空题1．(1) high=mid-1 (2)low=mid+1 2．(1) int m (2) m%i==0 (3)returns3．(1)max=x[i][ j] (2)max三、写出下列程序的运行结果1．625 2．Qian,p,95,92 3．2 4．12 5．h=8四、编程题1．#include"stdio.h"voidmain()精彩文档实用标准文案{intprime(int);intx;printf("\nPleaseinputaninteger:");scanf("%d",&x);if(prime(x))printf("\n%disprime.\n",x);elseprintf("\n%disnotprime.\n",x);}intprime(intn){intflag=1,i;for(i=2;i<=n-1&&flag==1;i++)if(n%i==0)flag=0;return(flag);}2．#include"stdio.h"voiddelask(chara[]){inti,j;charb[80];for(i=j=0;a[i]!='\0';i++)if(a[i]!='*')精彩文档实用标准文案{while(a[i]!='\0'){b[j]=a[i];j++;i++;}break;}b[j]='\0';for(i=0;b[i]!='\0';i++)a[i]=b[i];a[i]='\0';}voidmain(){chars[80];printf("Pleaseenterastring:\n");scanf("%s",s);delask(s);printf("%s\n",s);}3．#include"stdio.h"structdate{intday;精彩文档实用标准文案intmonth;intyear;};intdays(structdatedt){inty,m,d,ds[12]={31,28,31,30,31,30,31,31,30,31,30,31},i,s=0;y=dt.year;m=dt.month;d=dt.day;if(y%4==0&&y%100!=0||y%400==0)ds[1]=29;/* 计算每月的天数是本年第几天 */switch(m){case1:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case2:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case3:for(i=0;i<m-1;i++)s+=ds[i];精彩文档实用标准文案s+=d;break;case4:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case5:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case6:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case7:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case8:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;精彩文档实用标准文案case9:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case10:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case11:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;case12:for(i=0;i<m-1;i++)s+=ds[i];s+=d;break;}return(s);}voidmain(){structdateymd;intdys;精彩文档实用标准文案printf("Inputyearmonthandday\n");scanf("%d,%d,%d",&ymd.year,&ymd.month,&ymd.day);dys=days(ymd);printf("Todayisthefirst%ddaysinthemiddleofthisyear.\n",dys);}习 题 九一、选择题1．A 2．D 3．A 4．D 5．B 6．A二、写出下列程序的运行结果1．102．911113．***4．125．86．111 21 3三、编程题1．#include"stdio.h"#defineN10floatfmax=0,fmin=0;floataverage(floatfscore[],intn){inti;floatfaver,fsum=fscore[0];fmax=fmin=fscore[0];for(i=1;i<n;i++)精彩文档实用标准文案{if(fscore[i]>fmax)fmax=fscore[i];elseif(fscore[i]<fmin)fmin=fscore[i];fsum+=fscore[i];}faver=fsum/n;return(faver);}voidmain(){floatfave,fnumb[N];inti;for(i=0;i<N;i++)scanf("%f",&fnumb[i]);fave=average(fnumb,N);printf("max=%.2f min=%.2f average=%.2f\n",fmax,fmin,fave);}．此题有误，用宏定义较难实现。以下程序仅供参考#include"stdio.h"voidmain(){charstrg[30]="CLanguageProgram",c;精彩文档实用标准文案inti=0;while((c=strg[i])!='\0'){i++;if(c>='a'&&c<='z')c=c-32;elseif(c>='A'&&c<='Z')c=c+32;printf("%c",c);}printf("\n");}3．#include"stdio.h"#include"math.h"#defineS(a,b,c)((a+b+c)/2)#defineAREA(a,b,c)sqrt(S(a,b,c)*(S(a,b,c)-a)*(S(a,b,c)-b)*(S(a,b,c)-c))voidmain(){floata,b,c;printf("Pleaseinputa,b,c:");scanf("%f,%f,%f",&a,&b,&c);if(a+b>c&&a+c>b&&b+c>a)printf("%.2f\n",AREA(a,b,c));精彩文档实用标准文案elseprintf("Itisnotatriangle!\n");}习题十一、选择题1．B2．D3．D4．D5．C6．A7．A8．C9．D10．A11．A12．B13．C14．A15．C二、写出下列程序的运行结果1．2 1 2．0 34 89 3．10 4．84 35．CBADGFE 6．30,30 7．Thedata: 8．44445678910i=5 c=B三、编程题1．#include<stdio.h>#include<string.h>voidfun(char*s,int*a,int*b){while(*s!='\0'){if(*s>=65&&*s<=90)*a+=1; /* 可用 (*a)++;*/if(*s>=97&&*s<=122)*b+=1; /* 可用(*b)++;*/精彩文档实用标准文案s++;}}voidmain(){chars[100];intupper=0,lower=0;printf(" 请输入一串字符： \n");gets(s);fun(s,&upper,&lower);printf("upper=%d,lower=%d\n",upper,lower);}2．#include<stdio.h>voidfun(int*p1,int*p2){intp;p=*p1;*p1=*p2;*p2=p;}voidmain(){inta,b,*p11,*p22;scanf("%d,%d",&a,&b);p11=&a;p22=&b;精彩文档实用标准文案if(a<b)fun(p11,p22);printf("%d,%d\n",a,b);}习题十一一、选择题1．B2．D3．B4．C5．C6．C7．C8．A9．D10．B二、写出下列程序的运行结果1．1,2