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C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.B 2.D 3.B 4.A 5.B.C 7.C二、填空题1..obj 2.函数3./**/4.#include<stdio.h>inta,b;a,b）（略三、简答题二习题一、选择题A5.A3.4.D 1.B2.BB10. 9.CA6.C7.C 8.C15. 14.AA11.A12. 13.C二、填空题4.(1)a>=0(2)032.存储数据的单元.非0、0.变量17 4, 9.8. 5.161 7.-30.387 12..-617777210. 119.9三、与出下列程序的运行结果58 512 643 .,,.10052184•d4,c2185.四、编程题精彩文档.实用标准文案.#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);}.#include<stdio.h>voidmain(){charc1,c2;printf(“Pleaseinputamajuscule'n");scanf("%c”，&c1);c2=c1>'A'&&c1<'Z'?c1+32:c1;printf("%c\n”,c2);}.#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.C 2.C 3.A 4.C 5.D.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5,0,5.D 8.C 9.A 10.B二、 填空题.-50300、a=-50,b=300a=-50 b=300.102030、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=f 3.c=1,x=0,y=0,z=1 4.2120,20

5.在TC环境下为216,125在VC环境下为216,1806.a=A,b=d,c=F7.9,4,12,12.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(*'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k*\n);printf(*'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k'k*\n);2.(1)#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);一、选择题咛文档精彩文档.5.D10.B实用标准文案5.D10.B二、填空题1.6、5、1.6、5、52.(a%3==0||a%7==0)3.⑴a>b(2)a=c;(3)a,b,c三、写出下列程序的运行结果1.42.643.a=7,b=44.4646.*# 1.42.643.a=7,b=44.4646.*# 546四、编程题3.另见填空题1#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;},a,b,c);%.2f,%.2f,%.2f\n”“printf(}#include<stdio.h>-2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);.(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}.#include<stdio.h>voidmain(){longnum;intindiv,ten,hundred,thousand,tenthousand,place;/*分别代表个位、十位、百位、干位、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);一、选择题10.B1.(1)x>=0或！(x<0)(2)x<amin2.(1)i<10或i<=9(2)j%3或j%3!=03.(1)pi1.(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)(2)j%3或j%3!=0(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 2.y=-1 3.4 4.a=2,b=8 5.*76.45 7.1 8.s=03423四、 编程题.#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*/}}.#includestdio.hvoidmain(){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_x0010_;p*=n2;num=n1;}printf(um=%d,p=%d\n,num,p);}.#includestdio.hvoidmain(){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、选择题二、填空题1.地址常量2.非03.3.⑴j=9(2)j>=01.地址常量2.非03.3.⑴j=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(\:\)；8.(1)s[i]>=48&&s[i]<=57或s[i]>='0'&&s[i]<='9' (2)d[j]=0;或d[j]='\0';8.三、写出下列程序的运行结果1.137152.s=153.584.115.706.how1.137152.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("_x001D_",a[i]);printf("\n");}.#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++)}.#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("]”,a[i][j]);printf("\n");}}.#includestdio.hvoidmain(){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);}.#includestdio.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]);选择题5.A10.C9C.6D二、填空题4,83、、x.z.yx.z.z.1.structSTRUt[20];2xxxy三、写出下列.x.xx.y程序的运行结果Zhao,m,85,90.52144E5S361.四、编程题includestdio.h.1#defineN45structstudentcharname[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(ame:);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(ame:%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.#includestdio.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(ame:);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.A 2.C 3.D 4.A5.C7.D6.A一、填空题2.(1)intmm%i==0(2)(3)low=mid+1high=mid-11.(1) (2)returns(2)max.3(1)max=x[i][j]三、写出下列程序的运行结果124 231. 2Qian,p,95,92 . .h=8.5四、 编程题#includestdio.h1.voidmain()精彩文档.实用标准文案{intprime(int);intx;printf(\Pleaseinputaninteger:);scanf(%d,&x);if(prime(x))printf(\%disprime.\n,x);elseprintf(\%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.#includestdio.hvoiddelask(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.#includestdio.hstructdate{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_x0010_0!=0||y@0==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.A2.D 3.A 4.D .B6.A5二、写出下列程序的运行结果8.5 12.4 11.110 .9 11 3.***1 1 6.2131三、 编程题#includestdio.h.1#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=%.2fmin=%.2faverage=%.2f\n,fmax,fmin,fave);}2.此题有误，用宏定义较难实现。以下程序仅供参考#includestdio.hvoidmain(){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(\);}.#includestdio.h#includemath.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);选择题5.CA98.C.D10.A6.A141.15.C1211.A.B13.C.A写出下列程序的运行结果8389.10 .4 2234Thedata:6CBADGFE5..30,307.44445678910.8c=B三、编程题#include<stdio.h>.1#include<string.h>三、编程题#include<stdio.h>.1#include<string.h>voidfun(char*s,int*a,int*b)while(*s!='\0') (if(*s>=65&&*s<=90){(*a)++;*/ /*可用*a+=1;if(*s>=97&&*s<=122)(*b)++;*/*b+=1； /*可用精彩文档.实用标准文案s++;}}voidmain(){chars[100];intupper=0,lower=0;抽潼晴尨请输入一串字符：\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.B 2.D 3.B 4.C .C5 B.1087.C .A 9