《C语言程序设计立体化教程》课后参考答案 (廖智蓉)

1、#include<stdio.h>main(){printf("***简易成绩管理信息系统***\n");printf("*1、输入成绩*\n");printf("*2、存储成绩*\n");printf("*3、显示成绩*\n");printf("*4、计算平均成绩*\n");printf("*5、求最高分*\n");printf("*6、求最低分*\n");printf("*7、计算不及格率*\n");printf("*0、退出系统*\n");printf("**************************\n");}略1、#include<stdio.h>main(){floatgz;printf("请输入一位职工的应发工资：\n");scanf("%f",&gz);gz=gz*0.85;printf("该职工的实发工资是%.2f\n",gz);}2、#include<stdio.h>main(){charc1,c2,c3,c4,c5;printf("请输入含5个英文字母原文：\n");scanf("%c%c%c%c%c",&c1,&c2,&c3,&c4,&c5);c1=c1+4;c2+=4;c3+=4;c4+=4;c5+=4;printf("该密文是%c%c%c%c%c\n",c1,c2,c3,c4,c5);}3、#include<stdio.h>main(){floatf,c;printf("请输入一个华氏温度：\n");scanf("%f",&f);c=(f-32)*5/9;printf("华氏温度%.2f对应的摄氏温度是%.2f\n",f,c);}4、#include<stdio.h>main(){intx,bw,sw,gw;printf("请输入一个三位数：");scanf("%d",&x);bw=z/100;sw=z%100/10;gw=z-100*x-10*y;printf("百位为%d十位为%d个位为%d\n",bw,sw,gw);}5、#include<stdio.h>main(){intxh;charxb;doublesg,tz,tzzs;printf("********身体状况测量仪**********\n");printf("请输入学号：\n");scanf("%d",&xh);printf("请输入性别男（m）女（f）：");scanf("%c",&xb);printf("请输入身高(m)体重(公斤)：\n");scanf("%lf%lf",&sg,&tz);tzzs=tz/sg/sg;printf("学号是%d的%c同学体重指数是%.2lf\n",xh,xb,tzzs);}1、#include<stdio.h>main(){intcj,a,b,c;a=b=c=0;//a,b,c分别用来统计三个分数段人数的量。printf("Enterscores:");scanf("%d",&cj);while(cj>0)//遇到0或负数结束输入{if(cj>=85)a++;elseif(cj>=60)b++;elsec++;scanf("%d",&cj);}printf(">=85:%d\n",a);printf("60-84:%d\n",b);printf("<60:%d\n",c);}2、#include<stdio.h>main(){inti;for(i=1;;i++)if(i%3==1&&i%5==3&&i%7==5&&i%9==7)break;printf("%d是满足条件最小数!\n",i);}3、#include<stdio.h>main(){intx,qw,bw,sw,gw,n=0;for(x=1000;x<=9999;x=x+2){qw=x/1000;bw=x/100%10;sw=x/10%10;gw=x%10;if(qw<=bw&&bw<=sw&&sw<=gw){n++;printf("%7d",x);}}printf("\n满足条件一共有%d个",n);}4、#include<stdio.h>intmain(){intx=350,y;printf("请输入你猜的价格：");scanf("%d",&y);if(y>x)printf("高了\n");elseif(y<x)printf("低啦\n");elseprintf("恭喜你，该物品送给你！\n");}5、#include<stdio.h>main(){charcx;floatgls,fy;printf("请输入车型\n");scanf("%c",&cx);printf("请输入公里数：");scanf("%f",&gls);if(cx=='x')if(gls<=3)fy=7;elsefy=7+(gls-3)*2.1;elseif(cx=='f')if(gls<=3)fy=8;elsefy=8+(gls-3)*2.4;elseif(gls<=3)fy=9;elsefy=9+(gls-3)*2.7;printf("车型%c,公里数%.2f公里，应付费用%.2f元\n",cx,gls,fy);}6、#include<stdio.h>main(){intxh;charxb;floatsg,tz,tzzs;printf("********体重测量仪*********\n");printf("请输入你的学号\n");scanf("%d",&xh);printf("请输入你的性别(男m，女f)\n");scanf("%c",&xb);printf("请输入你的体重（公斤）\n");scanf("%f",&tz);printf("请输入你的身高（米）\n");scanf("%f",&sg);tzzs=tz/(sg*sg);if(tzzs<18)printf("%d号偏瘦，请加强营养！\n",xh);elseif(tzzs<25)printf("%d号体重正常，请继续保持！\n",xh);elseif(tzzs<30)printf("%d号体重微胖，请稍加锻炼！\n",xh);elseif(tzzs<35)printf("%d号体重轻度肥胖，请加强锻炼！\n",xh);elseif(tzzs<40)printf("%d号体重中度肥胖，请稍加节食及加强锻炼！\n",xh);elseprintf("%d号体重重度肥胖，请节食及加强锻炼！\n",xh);}1、#include<stdio.h>intisprime(intx){inti;for(i=2;i<=x-1;i++)if(x%i==0)return0;return1;}main(){intm;scanf("%d",&m);if(isprime(m))printf("%d是素数\n",m);elseprintf("%d不是素数\n",m);}2、#include<stdio.h>intissx(intx){intgw,sw,bw;gw=x%10;sw=x/10%10;bw=x/100;if(x==gw*gw*gw+sw*sw*sw+bw*bw*bw)return1;elsereturn0;}main(){intm;scanf("%d",&m);if(issx(m)==1)printf("%d是水仙花数\n",m);elseprintf("%d不是水仙花数\n",m);}3、#include<stdio.h>doublecal_power(floatx,intn){inti;doubles=1;for(i=1;i<=n;i++)s=s*x;returns;}main(){intn,i;floatx;doublesum=0;printf("输入浮点数x和正整数n:\n");scanf("%f%d",&x,&n);for(i=1;i<=n;i++)sum=sum+1/cal_power(x,i);printf("多项式的和是%.2f\n",sum);}4、#include<stdio.h>inttotal(intn){if(n==1)return1;if(n>=2)returntotal(n-1)+n;}main(){inti,n;intt=0;scanf("%d",&n);for(i=1;i<=n;i++)t=t+total(i);printf("%d\n",t);}5、#include<stdio.h>inttotal(intn){if(n==1)return1;if(n>=2)returntotal(n-1)+n;}main(){inti,n;floatt=0.0;scanf("%d",&n);for(i=1;i<=n;i++)t=t+1.0/total(i);printf("%f\n",t);}6、#include<stdio.h>doublefack(doublen){if(n==1||n==0)return1;if(n>2)returnfack(n-1)*n;}main(){inti,j,n;floatt=0;scanf("%d",&n);for(i=1,j=n;i<=n;i++,j--)t=t+j/fack(n);printf("%f\n",t);}1、#include<stdio.h>main(){floatscore[10],sum,ave;inti,count=0;printf("请输入10个学生的英语成绩：\n");for(i=0;i<10;i++)scanf("%f",&score[i]);sum=0;for(i=0;i<10;i++){sum=sum+score[i];if(score[i]<60)count++;}ave=sum/10;printf("10个学生的英语平均分是%.2f\n10个学生的英语不及格的人数是%d\n",ave,count);}2、#include<stdio.h>main(){floata[10]={7.23,1.5,5.24,2.1,2.45,6.3,5,3.2,0.7,9.81},sum,v;inti;v=0;for(i=0;i<10;i++)v=v+a[i]/10;sum=0;for(i=0;i<10;i++)if(a[i]>=v)sum=sum+a[i];printf("10个学生的平均分是%.2f\n高于等于平均分的和是%.2f\n",v,sum);}3、#include<stdio.h>main(){floata[4][4];inti,j;for(i=0;i<4;i++)for(j=0;j<4;j++)scanf("%f",&a[i][j]);for(i=0;i<4;i++)for(j=0;j<4;j++)a[i][j]/=a[i][i];for(i=0;i<4;i++){for(j=0;j<4;j++)printf("%6.2f",a[i][j]);printf("\n");}}4、#include<stdio.h>main(){longa[40]={1,1},s=2;inti;for(i=2;i<40;i++){a[i]=a[i-1]+a[i-2];s+=a[i];}printf("%ld\n",s);}5、#include<stdio.h>main(){inta[10],max,min,i;floatav,s;for(i=0;i<10;i++)scanf("%d",&a[i]);max=min=a[0];s=a[0];for(i=1;i<10;i++){if(a[i]>max)max=a[i];if(a[i]<min)min=a[i];s=s+a[i];}s=s-max-min;av=s/8;printf("%.2f\n",av);}1、#include<stdio.h>#include<string.h>#defineMAXLINE80voidencrypt(char*);intmain(void){chars[MAXLINE];printf("shurustring:");gets(s);encrypt(s);printf("Afterbeingencrypted:\n");printf("%s\n",s);return0;}voidencrypt(char*s){for(;*s!='\0';s++)if(*s=='z')*s='a';else*s=*s+1;}2、#include<stdio.h>#include<string.h>#defineMAXLINE80voidf(char*s){charch;inti,m,n;i=0;m=n=strlen(s)-1;while(i<(n+1)/2){ch=s[i];s[i]=s[m];s[m]=ch;i++;m--;}}intmain(void){charline[MAXLINE];printf("请输入字符串:\n");gets(line);f(line);printf("输出逆序后的字符串：\n");printf("%s\n",line);return0;}3、#include<stdio.h>main(){FILE*fp;longs;inti;chara[100];if((fp=fopen("c:\\design.dat","w+"))==NULL){printf("Cannotopenfilestrikeanykeyexit!");