C++编程(部分答案).docx

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1、谨慎#include void main(void)cout*n ”.cout Hello! nH;coutH *实验1-2#include void main(void)int a,b,c,sum;coutInput a,be”;cinabc;sum=a+b+c;coutSum=sumendl;实验1-3#include void main(void) float a,b,l,s;coutInput a,b:;cinab;l=2*(a+b);s=a*b;coutM L=ulendl; coutS=sendl;实验1-4#include void main(void)float f,c;cou

2、t请输入华氏温度值:”；cinf;c=(f-32)*5.O/9.O;coutvv”摄氏温度值为:“ vvcvvendl;实验1-5#include void main(void)int n,a,b,c,d,m;coutInput n:M;cinn;a=n/1000;b=(n-a* 1000)/100;c=(n-a*1000-b* 100)/10;d=n%10;m=d*l 000+c* 100+b* 10+a;coutm=mendl;实验2-1#include void main(void) int a;coutnInput a:;cina;if(a0)couivvavv”为正数。nH;else

3、coutvvavv”为负数。n; if(a%2=0)coutvvavv”为偶数。n”; elsecouivvavv”为奇数。nH;实验2-2#include #include void main(void) double x,y;coutMInput x:H;cinx;if(x5)y=-x+3.5;else if (x10)y=20-3.5*(x+3)*(x+3); elsey=x/2.0-3.5+sin(x); coutHy=Myendl;实验2-3#include void main(void)int a,c;float r,m,f;coutvv”请输入奖金数额:;cina;if(a=8O

4、O)c=8;elsec=a/100;switch (c)case 0:r=0;break;case 1 :r=0.02;break;case 2case 3:r=0.04;break;case 4:case 5:case 6:case 7:r=0.08;break;case 8:r=0.1;break;)m=a*r;f=a-m;coutM税率:rendl;cout应交税款:vmvendl;cou t v v ” 实得奖金:fendl;练习3-14#include void main(void)int a,b,c;coutnInput a,b,c:n;cinabc;if (ab & bc)cou

5、tc & cb)couta,tcAta & ac)coutbc & ca)couta & ab)coutctatbendl;elsecoutc,tbVaendl;练习3-16#include void main(void)float dataLdata2,result;char op;coutvv”输入两个实数:；cindata I data2;coutvv”输入运算符:；cinop;switch (op)case ,+,:result=data 1 +data2;break;case -result二data l-data2;break;case *:result=datal *data2;

6、break;case 7:result=data l/data2;break;coutdata 1 opdata2=,resultendl;练习3-21#include void main(void) int i;float t,sum;sum=0;for (i= 1 ;i= 100;i+)t=1.0/i;sum=sum+t;)cout,Sum=,sumendl; )#include void main(void)inti;float t,sum;sum=0;i=l；while (i=100)t=1.0/i;sum=sum+t;i+；)coutSum=Hsumendl;)#include vo

7、id main(void)inti;float t,sum;sum=0;i=l；dot=1.0/i;sum=sum+t;i+； while (i=100);coutHSum=nsumendl;练习3-22#include void main(void)float x,t,y;coutvv”请输入x的值(x0)： cinx;t=1.0;y=0.0;while (t=le-4)y=y+t;t=t/x;)coutMy=yendl;例题2-26编写能显示平行四边形图形(图形组成)的程序。#include void main(void)int i,j,k;for (i=l;i=5;i+)for (k=l

8、;k=5-i;k+)cout*for (j=l;j=10;j+)cout*;coutendl;)练习3-24#include void main(void)int n,i,j,k;float c,sum,avg;i=0;j=0;k=0;sum=0.0;coutvv”请输入十天的温度值:；for (n= l;n0)i+；else if (c=0)j+;elsek+;sum = sum+c;)avg=sum/10.0;cout0 度以上天数:iendl;cout0 度天数:Mjendl;cout0 度以下天数:ukendl; coutvv”平均温度: vvavgvvendl;练习3-25#incl

9、ude void main(void) inti;long int t;float s;s=0;t=l；for (i=l;i=10;i+) t=t*i;s=s+t;)coutsendl;练习3-26#include void main(void)int i,j,k;for (i=l;i=33;i+)for (j= 1 ;j=5O;j+)k=100-i-j;if(k%2=0) & (i*3+j*2+k/2=100) coutiAt,j,t,kendl;练习3-27#include void main(void)int i,j,k;for (i=l;i=5;i+)for (k=l;k=5-i;k+

10、) coutfor (j=l ；j=2*i-l ;j+) cout*;coutendl;)for (i=l;i=4;i+)for (k=l;k=i;k+) coutfor (j=l；j=9-2*i;j+) cout*;coutendl;实验4-1#include #define N 10 void main(void) int i,a,b,c,d,e;float sN;coutvv”请输入成绩:； for (i=0;iN;i+)cinsi;a=0：b=0;c=0;d=0;e=0;for (i=0;i=90 & si=80 & si=70 & si=60 & si=69) d+;else e+;

11、)coutvv”各分数段人数为:Hendl;coutvv”优(90-100)： Haendl;coutvv 良(889)： Mbendl;cout”中(70-79) ： cendl;coutvv”及格(60-69)： ndendl;coutvv不及格(0-59)： ueendl;实验4-2a#include #include #define N 10void main(void)int i,j,aN,temp;coutvv”请输入数据:“；for (i=0;iN;i+)cinai;for (i=0;iN-l;i+)for (j=O;jaj+l)temp=a|j;a|j=aj+1 ;aj+ l=

12、temp;for (i=0;iN;i+)coutsetw(6)ai;coutendl;实验4-2b#include #include #define N 10void main(void)int ij,aN,temp;coutc,请输入数据:；for (i=0;ivN;i+)cinai;for (i=0;iN-l;i+)for (j=i+ l;jaj)temp=afi ;ai=aj;aj=temp;for (i=0;iN;i+)coutsetw(6)ai;coutendl;实验4-3#include #include void main(void)inti,j,a55;int max,min,

13、maxi,maxj,mini,minj,s;coutvv”请输入数据:“；for (i=0;i5;i+)for (j=O;j5;j+)cinaij;for (i=0;i5;i+)for (j=O;j5;j+)coutsetw(6)aij;coutendl;max=a00;min=a00;s=0;maxi=0;maxj=0;mini=0;minj=0;for (i=0;i5;i+)for (j=O;jmax)max=aij;maxi=i;maxj=j;if (aijmin)min=ai j ;mini=i ;minj=j;)if (i=j) s=s+aij;)coutmax=a,maxi,，ma

14、xj,=maxendl; cout,min=,na,mini,J,minj,=,minendl; couts=,sendl;实验4-4#include #include #define M 3#define N 3 void main(void)int ij,aMN,bMN,cMN;coutvv”请输入A矩阵数据:;for (i=0;iM;i+)for (j=O;jvN;j+) cinaij;couivv”请输入B矩阵数据:for (i=0;iM;i+)for (j=O;jvN;j+) cinbi|j;for (i=0;iM;i+)for (j=O;jvN;j+)ci|j=ai|j+bij;c

15、outvv”C 矩阵为：nendl;for(i=0;ivM;i+)for (j=O;jN;j+)coutsetw(6)cij;coutendl;练习411#include #include void main(void)int i,j,a55;for (i=0;i5;i+)for (j=O;j=j)aij=l；elseaij=j-i+l；)for (i=0;i5;i+)for (j=0;j5;j+)coutsetw(6)aifjl； coutendl;练习4-18#include #include #define M 6#define N 5void main(void)int sMN,ij,

16、sum,max;coutvv”请输入数据”；for (i=0;iM-l;i+)for (j=O;jN-l;j+) cinsij;for (i=0;iM-l;i+)sum=0;for (j=l;jN-l;j+)sum=sum4-sij;si4=sum;)for (j=l;jN-ly+)max=s0j;for (i=O;imax) max=sij;s5j=max;)coutH学号“ vv“数学” vv”语文”n外语” v”总成绩” vvendl;coutn”；for (i=0;iM-l;i+)for (j=O;jN;j+)coutsetw(8)sijj;coutendl;)coutHn”；cout

17、n最高分”；for (j=l;jN-l;j+)coutsetw(8)s5|j;coutendl;#include #define N 10 void main(void) int aN,i,k;float sum,ave;coutvv”请输入数据:“；for (i=0;i=N-l;i+) cinai;sum=0.0;k=0;for (i=0;i=N-l ;i+) sum=sum+ai;if (ai60) k+;)ave=sum/N;coutvv”平均分:naveendl; coutn不及格人数:Mkendl;练习4-8#include void main(void)int a20,i;a0=0

18、;al =0;a2=2;a3=5;for (i=4;i=19;i+)aij=ai-1 J+ai-2+ai-3j4-ai-4;for (i=0;iv=19;i+)if(i%5=0)coutendl;coutai,t,;)coutendl;练习4-9a#include #define N 10void main(void)int aN,ij,temp;coutvv”请输入数据:;for (i=0;i=N-l;i+)cinai;for (i=0;i=N-2;i+)for (j=0;j=N-2-i;j+)if(aUaU+l)temp=aj;aj=a|j+ l;a|j+1 =temp;)for (i=0

19、;i=N-l;i+)coutaiAt,;coutendl;练习4-9b#include #define N 10void main(void)int aN,i,j,temp;coutv”请输入数据:“；for (i=0;ivN;i+)cinai;for (i=0;i=N-2;i+)for (j=i+1 ;j=N-l;j+) if(aiaj)temp=ai;ai=aj;aj=temp;for (i=0;iN;i+)coutaiJAt,;coutendl;#include int sum(int n)int s;if(n=l)s=l;elses=n+sum(n-l); return s;void

20、main(void)int m,total;coutInput m:n;cinm;total=sum(m);coutTotal=totalendl;练习5-24#include float power(float x,int n) float p;if(n=O) p=l； elsep=x*power(x,n-l);return p;void main(void)float y,t;int m;coutMInput x,m:n;cinym;t=power(y,m);coutHt=Mtendl;实验5-1#include void main(void)int a 10,i,k,flag,top,b

21、ot,mid,loc; coutvv”输入数组数据:;for (i=0;i10;i+)cinai;coutvv”输入要查找数据:“； cink;flag=0;top=0;bot=9;while (flag=0 & top=bot)mid=(top+bot)/2;if(k=amid)flag=l;loc=mid;break;)else if (kamid) bot=mid-l;elsetop=mid+1;if (flag= 1) coutloc;elsecoutvv”没有找到.”；)实验5-2a#include #include void main(void)char str8O,strl 40

22、,str240;coutInput 2 string:;cin.getline(strl,40)； cin.getline(str2,40); strcpy(str,strl);strcat(str,str2);coutstrendl;实验5-2b#include #include void main(void)char str80,strl40,str240;int i,j;coutInput 2 string:*;cin.getline(str 1,40);cin.getline(str2,40);i=0;while (strli!=,O,)stri=strli;i+；j=0；while

23、(str2j!=。)stri=str2j;i+；j+;)stri=W;coutstrendl;)实验5-3#include #include #define N 8void main(void)int cNN,m,n,k;char space=;for (n=l;n=N;n+)cnn=l;cnl=l；)for (m=3;mvN;m+)for (n=2;n=m-l ;n+)cm n=cm-1 n-1 +cm-1 n;for (m= 1 ;mN ;m+)for (k=l;k=(7-m)*4;k+) coutspace;for (n=l;n=m;n+)coutsetw(8)cm n;coutendl

24、;实验5-4#include #include #define M 7#define N 5 void main(void) float sMN,sum,ave,max,min,temp;int i,j,k;coutvv”Input Data:Hendl;for (i=0;iM-2;i+)for (j=O;jN-l;j+) cinsij;for (i=0;iM-2;i+)sum=0.0;for (j=l;jN-l;j+) sum=sum+si|j;ave=sum/(N-2);siN-l=ave;for (j=l;jN-l;j+)max=s0Jj;min=sOj;for (i=0;imax) m

25、ax=si|j;if (sijmin) min=sijj;)sM-2Jj=max;sM-lj=min;for (i=0;iM-3;i+)k=i;for (j=i+l;jvM2;j+)if(skN-lsUN-l)k=j；if(k!=j)for (j=O;jN;j+)temp=sij;sij|j=skj;skj|j=temp;coutM Num.,n Math. Chin. Engl. Aveg.Hendl;coutHnencll;for (i=0;iM-2;i+)for (j=O;jN;j+)coutsetw(6)sij;coutendl;coutH max;for (j=l;jN-l;j+)c

26、outsetw(6)sM-2 j ;coutendl;cout min;for (j=l;jN-l;j+)coutsetw(6)sM-1 j;coutendl;coutendl;练习5-18#include float ftoc(float f) float c;c=(f-32)*5.0/9.0; return c;)void main(void)float fl,cl;coutnInput f:H;cinf 1;cl=ftoc(fl);cout,C=,c lendl;练习5-19int prime(int k)int flag,i;flag=l;for (i=2;i=k-l ;i+) if(

27、k%i=0)flag=O;break; return flag;#include void main(void)int n;coutMInput n:M;cinn;if (prime(n)=l)coutvvnvv”是素数。Hendl; elsecoutnvv”不是素数。 vvendl;练习5-21#include void main(void) float s;float pfh(int);s=pfh( 12)+pfh( 15 )*pfh( 15);coutMs=nsendl;)float pfh(int n)float p,i;p=0；for (i=l;i=n;i+) p=p+i*i；ret

28、urn p;函数例子#include #include float f(int n)float t,i;t=l；for (i=l;i=le-4);cout,sin(,aM)=,sendl;#define N 5 void main(void) int aN,ij,k,tl； float sN,t2;coutvv”输入运动员号码和成绩:”; for (i=0;iN;i+)cinai; cinsi;)for (i=O;iN-l;i+)k=i;for (j=i+l;jsj) k=j;if(ki)tl=ai;ai=ak;ak=tl;t2=si;si=sk；sk=t2;for (i=0;ivN;i+)

29、couti+lt;coutai,t,; coutsi1; coutendl;练习4-20#include # define M 3# define N 4# define K 3void main(void)int aMN,bNK,cMK,i,j,q； coutvv”输入矩阵An”；for (i=0;iM;i+)for (j=O;jN;j+) cinaij;cout输入矩阵Bn;for (i=0;ivN;i+)for (j=O;jK;j+) cinbi0;for (i=0;iM;i+)for G=O;jK;j+)cij=O；for (q=0;qN;q+)ciU=ciU+aiq*bqj;)cou

30、t输出矩阵Cn;for (i=0;iM;i+)for (j=O;jK;j+) coutcijM,;coutendl;练习4-17B#include #include # define N 5void main(void)char sN20,string20;int i,j,k;float aN,t;coutv v ”输入运动员号码:n ；for (i=0;iN;i+)cin.getline(si,20);coutvv”输入运动员成绩:n”；for (i=0;ivN;i+)coutsiM:w;cinai;for (i=0;iN-l;i+)k=i;for (j=i+l;jaj)k=j；if(ki)

31、t=ai;ai=ak;ak=t;strcpy(string,si);strcpy(si,sk);strcpy(sk,string);)coutvv”名次” vvtvv号码“ vvWvv”成绩 vvendl;for (i=0;iN;i+)coutvi+lt;coutsi,t,;coutai,t,;coutendl;实验6-1#include #include #define N 10void sortl(int a,int n)int ij,temp;for (i=0;in-l;i+)for (j=O；ja|j+l)temp=aj ;aj=a|j+l;a|j+l=temp;Ivoid sort2

32、(int a,int n)int i,j,temp;for (i=0;in-l;i+)for (j=i+l;jn;j+)if(aiaj)temp=ai;ai=aj;aj=temp;)void sort3(int a,int n)int i,j,k,temp;for (i=0;iaj) k=j;if(ki)temp=ai ;ai=ak ;ak=temp;)void print(int a,int n)inti;for (i=0;in;i+)coutsetw(8)ai;coutendl;void main(void)int aN,i;cout Input Array:n;for (i=0;iN;i

33、+)cinai;sortl(a,N); print(a,N); sort2(a,N); print(a,N); sort3(a,N); print(a,N);实验6-2#include double px(double x,int n) double p;if(n=l)p=x;elsep=x-x*px(x,n-l);return p;)void main(void)double s,x,int n;coutInput x:H;cinx;coutInput n:M;cinn;s=px(x,n);cout,s=,sendl;void str_cat(char s,char si,char s2)s

34、trcpy(s,sl)；strcat(s,s2);)void main(void)char str8O,strl 40,str220;coutInput 2 string:11;cin.getline(strl ,40);cin.getline(str2,20);str_cat(str,str 1 ,str2);coutstrendl;)实验6-3B#include void str_cat(char s,char sl,char s2)int i,j;i=0;while (sli!=)si=sli;i+；)j=0;while (s2j!=。)si=s2j;i+；j+;)si=AO;)void main(void)chars80,sl40,s220;coutInput 2 string:*;cin.getline(sl,20);cin.getline(s2,40);str_cat(s,sl,s2);coutsendl;实验6-4#include #include double fsin(double x)double s,p,t,k,f； int i;i=l；s=0.0;k=x;t=1.0;f=l；dop=f*k/t;s=s+p;i=i+2;k=k*x*x;t=t*i;f=(-l)*f;while (fabs(p)=le-10); return s;voi