C语言程序的设计苏小红版答案.docx

2. 2#include<stdio.h>main()Ifloatx=2.5,y=2.5,z=2.5;printf("x=%fn",x);printf("y=%fn",y);printf("z=%fn",z);)3. 1(1)#include<stdio.h>main()Iinta=12,b=3;floatx=18.5,y=4.6；printf("%dn",(float)(a*b)2);printf("%dn”,(int)x%(int)y)；)3. 2#include<stdio.h>main()Iintx,b,b1,b2,s；printf(,Inputx:")；scanf("%d",x);b2=x100;b1=(×-b2*100)10;b0=x%10;s=b0*100+b1*10+b2;printf("s=dn",s);)3. 3#include<stdio.h>#incIude<mah.h>main()Ifloatrate=0.0225；floatn,capital,deposit;printf("Inputn,capitaI：");scanf("%f,%f",&n,&capital);deposit=capitaI*pow(1+rate,n)；printf("deposit=%fn",deposit)；J3. 4include<stdio.h>#incIude<mah.h>main()floata,b,c；doubIex,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=%fn",×,y);14. 1(1)#include<stdio.h>main()(chard=,a,c2=,b,c3='c'printf(,'a%cb%cc%cn",d,c2,c3);)4.1 (2)#include<stdio.h>main()(inta=12,b=15;printf(,a=%d%,b=%d%n",a,b);)4.2 (3)#include<stdio.h>main()(inta,b；scanf("%2d%*2s%2d",&a,&b);printf("%d,%dn",a,b);)4.3 #include<stdio.h>main()(longa,b;floatx,y；scanf("%d,%dn",&a,&b);scanf("%f,%fn",&x,&y);printf("a=%d,b=%dn",a,b);printf("x=f,b=%fn",x,y);J5. 1#include<stdio.h>main()(floata；printf("Innputa:',);scanf;if(a>=0)a=a;printf("a=%fn",a)；)else(a=-a;printf("a=%fn",a)；)5. 2#include<stdio.h>main()Iinta；printf("Inputa:")；scanf("%d",a);if(a%2=0)(Printf("a是偶数")；)else(printf("a是奇数")；)5. 3#include<stdio.h>#incIude<mah.h>main()Ifloata,b,c,s,area；printf("Inputa,b,c：");scanf(n%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=%fn",area)；)else(Printf("不是三角形")；)5.4#include<stdio.h>#incIude<math.h>main()floata,b,c,×,y；printf(',Inputa,b,c：;scanf("%f,%f,f",&a,&b,&c);if(a=0)(Printf("该方程不是一元二次方程n");)if(b*b-4*a*c>O)(x=(-b+sqrt(b*b-4*a*c)/(2*a)；y=(-b-sqrt(b*b-4*a*c)/(2*a);Printf("x=%f,y=%fn",x,y);)elseif(b*b-4*a*c=0)(×=-b(2*a);y=-b(2*a);printf("×=%f,y=%fn",x,y);)else(Printf("该方程无实根n");)5.5#include<stdio.h>main()(intyear,flag；printf("Inputayear：")；scanf("%d",&year)；if(year%4=0&&year%400!=0year%400=0)(fag=1;)else(fag=0;)if(fIag=Dprintf(,%disaleapyear!n",year)；else(printf("%disnotaleapyear!n,',year)；)5.6#include<stdio.h>main()Iintyear,flag；printf("Inputayear：")；scanf(',%d",&year)；fIag=year%400=0year%4=0&&year%100!=0?1：0；if(f|ag=1&&flag!=0)(printf("%disaleapyear!n,',year);)else(printf("%disnotaleapyear!n,',year)；)5.7#include<stdio.h>main()Icharch；printf("Inputch:");scanf("%c",&ch)；if(ch>=,a,aach<=,z')(ch=getchar()；ch=ch-32;printf("%c,%dn",ch,ch);)elseif(ch>=,A,Sch<=,Z')(ch=getchar()；ch=ch+32;printf("%c,%dn",ch,ch);)elseprintf("%c",ch)；5. 8#include<stdio.h>main()charch;printf("Inputch:,);scanf("%c",&ch);if(ch>=48&&ch<=57)printf(',ch是数字字符n");)elseif(ch>=65&&ch<=90)(Printf("ch是大写字母n”)；)elseif(ch>=97&&ch<=122)(Printf("ch是小写字母n");)elseif(ch=32)(printf(,ch是空格n");printf("ch是其他字符n");6. 9#include<stdio.h>main()(intscore,grade；printf("Inputscore：");scanf("%d",&score);grade=score10;if(score<0score>100)Iprintf("Inputerrorn");if(score>=90&&score<=100)(printf(',%d-An",score)；)elseif(score>=80&&score<90)printf("%d-Bn",score)；)elseif(score>=70&&score<80)(printf("%d-Cn",score)；)elseif(score>=60&&score<70)(printf("%d-Dn",score)；)elseif(score>=0&&score<60)(printf("%dEn",score);)J7. 10#include<stdio.h>main()(intyear,month;printf("Inputyear,month：,')；scanf("%d,%d",&year,&month);if(month>121month<=0)(printf("errormonthn,');)eIse(switch(year,month)(case12：case10：case8：case7：case5：case3：case1：printf("31天n");break；case11：case9：case6：case4：printf("30天n");break；case2：if(year%4=0&&year!=0year%4OO=O)(printf(',29天n");)else(printf(',28天n");)break；default：printf(,'Inputerrorn");)1J8. 1(1)include<stdio.h>main()(inti,j,k；charspace=',;for(i=1；i<=4;i+)(for(j=1；j<=i；j+)(printf("%c",space);)for(k=1；k<=6；k+)(printf("*");)printf(',n")；)8.1 (2)#include<stdio.h>main()Iintk=4,n；for(n=0；n<k；n+)(if(n%2=0)continue;k-；)printf("k=%dn,n=%dn",k,n);6. 1(3)#include<stdio.h>main()I1 ntk=4,n；for(n=0;n<k;n+)(1 f(n%2=0)break；k一；)printf("k=%d,n=%dn",k,n);J6.2(1)#include<stdio.h>main()(inti,sum=0；for(i=1；i<=101；i+)(sum=sum+i；)printf("sum=%dn",sum)；)6.2(2)#include<stdio.h>main()Ilongi;longterm,sum=0;for(i=1；i<=101；i=i+2)Iterm=i*(i+1)*(i+2);sum=sum+term;)printf("sum=%ldn",sum);)6.2(4)#include<stdio.h>#incIude<math.h>main()(1 ntn=1;floatterm=1.0,sign=1,sum=0；while(term<=-1e-4term>=1e-4)term=1.0/sign；sum=sum+term;sign=sign+n;n+;)printf("sum=%fn",sum)；)6.2(5)#include<stdio.h>#incIude<mah.h>main()Iintn=1,count=1；floatx；doublesum,term；printf("Inputx：");scanf("%f",&x);sum=x；term=x;do(term=-term*x*x/(n+1)*(n+2)；sum=sum+term;n=n+2；count+；while(fabs(term)>=1e-5)；printf("sin(x)=%f,count=%dn",sum,count)；J6.3include<stdio.h>main()(intx=1,find=0;whiIe(Ifind)(if(x%2=1&&x%3=2&&x%5=4&&x%6=5&&x%7=0)(printf("x=%dn",x)；find=1;x+;J)*int×,find=0;for(x=1；!find;x+)Iif(x%2=1&&x%3二二2&&x%5二二4&&x%6二二5&&x%7二二0)(printf("x=%dn",x)；find=1;)*/6. 4include<stdio.h>main()(inti,n；longp=1,m=1;printf("Inputn：;scanf("%d",n);for(i=1;i<=n;i+)IP=i*i;m=i*i*i;printf("p=%d,m=%dn",i,p,i,m)；)6.5#include<stdio.h>main()Ifloatc,f；for(c=-40；c<=110；c=c+10)(f=95*c+32;printf(',f=%fn,1,f)；)J6.6include<stdio.h>#incIude<mah.h>main()Iintn;doublec=0.01875,x；dox=x*pow(1+c,12)-1000；n+;whiIe(x>0)；printf("x=dn",×);J6. 7include<stdio.h>main()intn=0;floata=100.0,c；printf("Inputc:")；scanf("%f",c);doIa=a*(1+c)；n+;)while(a<=200);printf(',n=%dn",n)；)6. 8#include<stdio.h>#incIude<math.h>main()(intn=1,count=1；doublesum=1,term=1；while(fabs(term)>=1e-5)(term=pow(-1,count)*(1.0/(n+2);sum=sum+term;n=n+2；count+；)sum=4*sum;printf("sum=%f,count=%dn",sum,count);)6. 9#include<stdio.h>#incIude<math.h>main()(intn=1,count=1；doublesum=1,term=1；while(fabs(term)>=1e-5)(term=term*(1.0n);sum=sum+term;n+;count+；)printf("sum=%f,count=%dn,',sum,count)；)6. 10#include<stdio.h>#incIude<mah.h>main()intx；for(x=100；x<=999；x+)(if(x=pow(x100,3)+pow(x10%10,3)+pow(x%10,3)printf("x=%dn",x)；)J6. 11include<stdio.h>main()(inti=0,n；longsum=0,term=1；printf(,Inputn:")；scanf("%d",n);doi+;term=term*i；sum=sum+term;)while(sum<n)；printf(',%dn,i-1);)7. 12#include<stdio.h>main()I1 nti,n,m,count=0,sum=0;printf("Inputn：");scanf("%d",&n);for(i=1；i<=n;i+)(printf("Inputm:");scanf("%d",&m)；if(m>0)(sum=sum+m;count+；)else(break；)printf("sum=%d,count=%dn,',sum,count);)J6.13#include<stdio.h>main()inti,n,m,count=0,sum=0;printf("Inputn:")；scanf("%d",&n);for(i=1；i<=n;i+)(printf("Inputm:");scanf("%d",&m);if(m>01m<0)(sum=sum+m;count+；)else(break；)printf("sum=%d,count=%dn,',sum,count)；)6.14#include<stdio.h>main()Iint×,y,z；for(x=0；x<=17；x+)(for(y=0;y<=25；y+)(3*x+2*y+z=50;z=30-y；if(3*x+2*y+z=50&&x+y+z=30)printf(',x=%d,y=%d,z=%dn,*,x,y,z)；)6.15#include<stdio.h>main()Iintx,y;for(x=0;x<=98；x+)(y=98-;2*x+4*y=386;if(x+y=98&&2*x+4*y=386)printf("x=%d,y=%dn",x,y)；)6.16#include<stdio.h>main()(intx,y,z；for(x=0；x<=20；x+)Ifor(y=0;y<=33；y+)(3*y+5*x+z3.0=100;z=100-y;if(5*x+3*y+z3.0=100&&z+x+y=100)(printf("x=%d,y=%d,z=%dn,',x,y,z)；1)J6. 17#include<stdio.h>main()(int×,y,z；for(x=1；x<=9;x+)(for(y=1；y<=17；y+)(10*x+5*y+z=100;z=50-y；if(10*x+5*y+z=100&&x+y+z=50&&z>0)Iprintf("x=%d,y=%d,z=%dn",x,y,z);)7. 1#include<stdio.h>intSquare(inti)returni*i;)intmain()Iinti=O;i=Square(i)；for(;i<3;i+)(staticinti=1;i+=Square(i);printf("%d,",i);)Printf("%dn",i);return0；)7. 2#include<stdio.h>inthour,minute,second；voidupdateO(second+；if(second=60)(second=0；minute+；)if(minute=60)(minute=0;hour+;)if(hour=24)hour=0;)voiddisplay()(printf("%d,%d,%dn",hour,minute,second)；)voiddeIay()(intt;for(t=0;t<100000000；t+)；)intmain()inti；voidupdayeO,dispIay(),deIay();for(i=0;i<1000000；i+)update()；display()；deIayO；)return0;)7. 3#include<stdio.h>intGetMax(inta,intb)；intmain()(int×,y,max；printf("Inputx,y：")；scanf("%d,%d",&x,&y)；max=GetMax(x,y)；printf("max=%dn",max)；return0；)intGetMax(intm,intn)(if(m>=n)returnm;elsereturnn;J8. 4include<stdio.h>intLCM(intn,intm);intmain()Iinta,b；printf(,Inputa,b:");scanf("%d,%d",&a,&b)；printf("%dn",LCM(a,b)；return0；)intLCM(intn,intm)Iint×1 ntfind=O;for(x=1；!find;x+)if(x%n=0&&x%m=0)find=1;J)return-1;)7. 5#include<stdio.h>longFact(intn)；intmain()(intm,a；printf("Inputm:")；scanf("%d",&m);for(a=1；a<=m；a+)(printf("%d!=%ldn",a,Fact(a)；)return0；JlongFact(intn)(1 nti;longresult=1；for(i=2;i<=n;i+)result*=i；returnresult；J7. 6#include<stdio.h>longFact(intn);intmain()Iintm；longret；printf("Inputm:")；scanf("%d",&m);ret=Fact(m)；printf("ret=%dn",ret)；return0；JlongFact(intn)(1 nti;Iongresult=1,sum=0；for(i=2;i<=n;i+)result*=i;sum=sum+result;)returnsum；)7.7(1)#include<stdio.h>intGcd(inta,intb);intmain()1intm,n；printf("Inputm,n:")；scanf("%d,%d",&m,&n)；printf("%dn",Gcd(m,n)；returnO;)intGcd(inta,intb)1intt,min,find=O;min=a<b?a：b；t=min;for(t=min；!find；t-)(a%t=0;b%t=O;if(a%t=O&&b%t=O)returnt;)find=1;)7. 7(2)#include<stdio.h>intGcd(inta,intb);intmainO(intm,n;printf("Inputm,n：");scanf(n%d,&n)；printf("%dn",Gcd(m,n);return0;JintGcd(inta,intb)(intr,temp;r=a%b;if(r=0)returnb;elsedo(temp=b;b=r;a=temp;r=a%b;Jwhile(r!=0);returnb;J8. 1(1)include<stdio.h>voidFunc(intx)(×=2;)intmain()(intx=10;Func(x);printf("%d",x);return0；J8.1 (2)#include<stdio.h>voidFunc(intb)(intj;for(j=0;j<4;j+)(bj=j;)intmain()(staticinta=5,6,7,8),i；Func(a);for(i=0;i<4;i+)(printf("%d",ai);)return0；)8.2(1)intPositiveNum(inta,intn)inti,count=0;for(i=0;i<n；i+)(1 f(ai>0)count+；)return0；)8.2(2)voidFib(longf,longn)(inti；f0=0;f1=1;for(i=2;i<n;i+)(fi=fi-1+fi-2;)8.2(3)#include<stdio.h>intmain()Iinta10,n,max,min,maxPos,minPos；for(n=0；n<10；n+)(scanf("%d",&an);)max=min=a0；maxPos=minPos=0;for(n=0；n<10；n+)(if(an>max)(max=an;maxPos=n;)elseif(an<min)(min=an;minPos=n;J)printf("max=%d,pos=%dn",max,maxPos)；printf("min=%d,pos=%dn",min,minPos)；return0；8.3voidDivArray(int*pArray,intn)(inti;for(i=0;i<n;i+)(pArrayi=pAttay0；)8.4#include<stdio.h>#defineN40intFaiINum(intscore,intn)；voidReadScore(intscore,intn);intmain()(intscoreN,n;printf("Inputn：");scanf("%d",&n);ReadScore(score,n);FaiINum(score,n)；printf("FaiINumstudentsare%dn,',FaiINum(score,n)；return0；)intFaiINum(intscore,intn)Iinti,count=0;for(i=0;i<n；i+)(if(scorei<60)count+；)returncount；)voidReadScore(intscore,intn)(inti;printf("Inputscore：");for(i=0;i<n;i+)(scanf("%d",scorei)；)8.5#include<stdio.h>#defineN40intHighAver(intscore,intn);intReadScore(intscore);intmain()IintscoreN,n;n=ReadScore(score);PrintfCHighAverstudentsare%dn",HighAver(score,n);return0；)intHighAver(intscore,intn)(inti,count=0,sum=0,aver；for(i=0;i<n;i+)(sum=sum+scorei；aver=sumn;)for(i=0;i<n;i+)(if(scorei>aver)count+；)returncount；JintReadScoreCintscore)(inti=-1；doi+;printf("Inputscore:");scanf(',%d",scorei);)whiIe(scorei>=0)；returni；)8.6#include<stdio.h>#defineN40intReadScoreCintscore,longnum)；intFindMax(intscore,longnum,intn);intmain()IintscoreN,n,max,num,t；longnumN；t=FindMax(score,n);max=scoret；num=numt;printf("max=%d,num=%dn",max,num)；return0；JintReadScoreCintscore,longnum)(1 nti=-1；doi+;printf("Inputstudent'sIDandscore：");scanf("%ld%d",&numi,scorei);)whiIe(numi>0&&scorei>=0)；returni；)intFindMax(intscore,longnum,intn)Iintmax,i；max=score0;for(i=1；i<n;i+)(if(scorei>max)max=scorei；)returni；)8.7#include<stdio.h>#defineN40intRead(inta)；intChangeArry(inta,intn);intmain()(intaN,n;printf("%dn",ChangeArry(a,n);return0；)intRead(inta)I1 nti;for(i=0;i<9;i+)(printf("Inputa：");scanf("%d,|,ai);returni；JintChangeArry(inta,intn)intmax,min,i,maxpos,minpos,term；max=min=score0；for(i=1；i<n；i+)if(ai>max)max=scorei；maxpos=n;else(ai<min)min=ai；minpos=n;temp=maxpos；maxpos=minpos；minpos=temp;returnai;8.10#include<stdio.h>#defineN5voidmain()(intaNN；intsum=0；inti,j;Printfc'请输入一个%d*d的矩阵n",N,N);for(i=0；i<N;i+)(for(j=0；j<N;j+)scanf("%d*',&aij);)for(i=0；i<N;i+)(for(j=0；j<N;j+)(if(i=ji+j=N-1)sum=sum+aij;）Printf（"对角线元素之和为:%dn",sum）；8.11#incIude<stdio.h>#defineN2#defineM3voidmain()IintaNM,bNM；inti,j,sum1=0,sum2=0,sum=0;Printf("请输入一个%d*d的矩阵n”,N,M);for(i=0；i<N;i+)Ifor(j=0;j<M；j+)(scanf("%d",&aij)；sum1=sum1+aij;)PrintfC'请输入一个%d*d的矩阵n”,N,M);for(i=0；i<N；i+)(for(j=0；j<M；j+)(scanf("%d",&bij);sum2=sum2+aij;)sum=sum1+sum2;printf("sum=%dn",sum)；)8.12#include<stdio.h>#defineN7voidYangHui(intaNN,intn);voidmain()Iinti,j,n,bNN；printf(,Inputn：;scanf("%d",n);YangHui(b,n)；for(i=0;i<n;i+)(for(j=0;j<=i;j+)(printf(',4d",bij);)printf(',n")；voidYangHui(intaNN,intn)(inti,j;for(i=0;i<n;i+)(ai0=1；aii=1;)for(i=2;i<n;i+)(for(j=1；j<i；j+)aij=ai-1j-1+ai-1j；)8.13#include<stdio.h>#defineN12voidmain()(inti;intfN=1,1);printf("%dr%dn",O,fO);printf("%dr%dn",1,f1);for(i=2;i<N;i+)Ifi=fi-1+fi-2;printf("%d：%dn",i+1,fi);)8.14#include<stdio.h>#include<stdlib.h>#include<time.h>#defineN6000voidmain()(intaN,i;intb1=0,b2=0,b3=0,b4=0,b5=0,b6=0；f