上机实践1 初识C语言实验1 一个简单的C程序simple.c#include <stdio.h>int main() {【代码1】//输出"很高兴学习C语言\n"【代码2】//输出"We are students\n"getchar();return 0;}实验2 有多个函数的C程序twoFuction.c#include <stdio.h>void speakHello(); //函数的原型void showStar(); //函数的原型int main() {showStar();speakHello();showStar();speakHello();showStar();}void speakHello() {【代码1】//输出""how are you\n"}void showStar() {【代码2】//输出"******\n"}实验答案实验1【代码1】：printf("很高兴学习C语言\n");【代码2】：printf ("We are students\n");实验2【代码1】：printf("how are you\n");【代码2】：printf("******\n");上机实践2 C程序的基本结构实验1 有多个源文件的C程序main.c#include <stdio.h>int add(int,int); //add的函数原型int sub(int,int);int main(){int result = 0;int x=12,y=20;printf("调用add函数计算和\n");result = add(x,y);printf("result =%d \n",result);printf("调用sub函数计算差\n");result = sub(x,y);printf("result =%d \n",result);}computer.cint add(int,int); //函数原型int sub(int,int);int add(int a,int b) {int sum =0;sum = a+b;return sum;}int sub(int a,int b) {int difference =0;difference = a-b;return difference;}实验2 向C程序添加源文件like.c#include <stdio.h>void swim();void seeTV();void swim() {printf("我喜欢游泳\n");}void seeTV() {printf("我喜欢看电视\n");}上机实践3 标识符与基本数据类型change.c#include<stdio.h>int main(){【代码1】//用int声明名字是cupOne,cupTwo的变量【代码2】//用int声明名字是temp的变量cupOne = 12;cupTwo = 18;printf("cupOne中的液体体积是:%d\n",cupOne);printf("cupTwo中的液体体积是:%d\n",cupTwo);【代码3】//将cupOne赋值给temp【代码4】//将cupTwo赋值给cupOne【代码5】//将temp赋值给变量cupTwoprintf("cupOne中的液体体积是:%d\n",cupOne);printf("cupTwo中的液体体积是:%d\n",cupTwo);return 0;}实验2 戒指的价值ringRice.c#include<stdio.h>【代码1】使用define预处理指令定义符号常量UnitPrice，其值是789int main(){【代码2】//用float 声明名字是goldMeasure1的变量【代码3】//用double 声明名字是goldMeasure2的变量;double fingerRingPrice;goldMeasure1 = 8.987654321f;fingerRingPrice = UnitPrice*goldMeasure1;printf("计量工具1显示的戒指的质量是(小数点保留10位):%12.10f\n",goldMeasure1);printf("根据计量工具1给出戒指的价格是:%f\n",fingerRingPrice);goldMeasure2 = 8.987654321;fingerRingPrice = UnitPrice*goldMeasure2;printf("计量工具2显示的戒指的质量是(小数点保留10位):%12.10f\n",goldMeasure2);printf("根据计量工具2给出戒指的价格是:%f\n",fingerRingPrice);return 0;}实验3 录入、输出成绩单scoreList.c#include<stdio.h>int main(){【代码1】//声明存放成绩的float型变量: math,english,chinesefloat sum = 0;【代码2】//调用scanf函数从键盘为: math,english,chinese输入值，输入的值用空格分隔sum = math+english+chinese;printf("%f\t%f\t%f\t总成绩:%f\n",math,english,chinese,sum);【代码3】//调用scanf函数从键盘为: math,english,chinese输入值，输入的值用逗号分隔sum = math+english+chinese;printf("%f\t%f\t%f\t总成绩:%f\n",math,english,chinese,sum);【代码4】//调用scanf函数从键盘为: math,english,chinese输入值，输入的值用减号分隔sum = math+english+chinese;printf("%f\t%f\t%f\t总成绩:%f\n",math,english,chinese,sum);return 0;}实验4 因地制宜、量力而行scoreList.c#include<stdio.h>#include<limits.h>#include<float.h>int main(){char ch1=97,ch2=ch1+256;short m1,m2;printf("ch1是%c,ch2是%c\n",ch1,ch2);printf("char型取值范围%d至%d\n",CHAR_MIN,CHAR_MAX);printf("unsigned char型取值范围%d至%d\n",0,UCHAR_MAX);printf("short型取值范围%d值%d\n",SHRT_MIN,SHRT_MAX);printf("unsigned short型取值范围%u至%u\n",0,USHRT_MAX);m1 = 60;m2 = m1+65536;printf("m1=%d,m2=%d\n",m1,m2);printf("int型取值范围%d值%d\n",INT_MIN,INT_MAX);printf("unsigned int型取值范围%u至%u\n",0,UINT_MAX);printf("long型取值范围%ld值%ld\n",LONG_MIN,LONG_MAX);printf("unsigned longt型取值范围%lu至%lu\n",0,ULONG_MAX);printf("float型取值范围%e至%e\n",FLT_MIN,FLT_MAX);printf("double型取值范围%e至%e\n",DBL_MIN,DBL_MAX);return 0;}实验答案实验1【代码1】：int cupOne,cupTwo;【代码2】：int temp;【代码3】：temp = cupOne;【代码4】：cupOne = cupTwo;【代码5】：cupTwo = temp;实验2【代码1】：#define UnitPrice 789;【代码2】：float goldMeasure1;【代码3】：double goldMeasure2;实验3【代码1】：float math,english,chinese;【代码2】：scanf("%f %f %f",&math,&english,&chinese);【代码3】：scanf("%f,%f,%f",&math,&english,&chinese);【代码4】：scanf("%f-%f-%f",&math,&english,&chinese);上机实践4 运算符、表达式与语句ticket.c#include <stdio.h>int main() {int ticketNumber;char a1,a2,a3,a4,a5;printf("输入彩票号码:\n");scanf("%d",&ticketNumber);【代码1】//将ticketNumber%10的值赋值给变量a1【代码2】//将ticketNumber/10的值赋值给变量ticketNumbera2 = ticketNumber%10;ticketNumber = ticketNumber/10;a3 = ticketNumber%10;ticketNumber = ticketNumber/10;a4 = ticketNumber%10;ticketNumber = ticketNumber/10;a5 = ticketNumber%10;printf("个,十,百,千,万位上的数字依次是:%d,%d,%d,%d,%d\n",a1,a2,a3,a4,a5);【代码3】//输出a1+a2+a3+a4+a5【代码4】//输出a1*a2*a3*a4*a5ticketNumber = a5*10000+a4*1000+a3*100+a2*10+a1;printf("%d\n",ticketNumber);ticketNumber = a1*10000+a2*1000+a3*100+a4*10+a5;printf("%d\n",ticketNumber);return 0;}实验2 武林高手之对决InputArray.c#include <stdio.h>int main() {【代码1】//声明两个无符号的short型变量：personOne，personTwounsigned short energySum;personOne = 6;personTwo = 3;printf("当前高手1和高手2的能量:%u,%u\n",personOne,personTwo);【代码2】//将表达式personOne++*personTwo--赋值给energySum;【代码3】//输出energySum的值;printf("当前高手1和高手2的能量:%u,%u\n",personOne,personTwo);energySum = personOne++*personTwo--;printf("第二次互相击掌产生的能量:%u\n",energySum);printf("当前高手1和高手2的能量:%u,%u\n",personOne,personTwo);energySum = personOne++*personTwo--;printf("第三次互相击掌产生的能量:%u\n",energySum);printf("当前高手1和高手2的能量:%u,%u\n",personOne,personTwo);return 0;}实验3 电路图circuit.c#include <stdio.h>int main() {int above1,above2,center,bottom1,bottom2;int pass = 0;printf("输入开关above1的状态(非0或0)");scanf("%d",&above1);printf("输入开关above2的状态(非0或0)");scanf("%d",&above2);printf("输入开关center的状态(非0或0)");scanf("%d",¢er);printf("输入开关bottom1的状态(非0或0)");scanf("%d",&bottom1);printf("输入开关bottom2的状态(非0或0)");scanf("%d",&bottom2);【代码1】//above1和above2为开状态的逻辑表达式的值赋值给passprintf("pass = %d\n",pass);pass = (above1!=0||bottom1!=0)&&(center!=0)&&(above2!=0||bottom2!=0);【代码2】//above1或bootom1为开状态，center为开状态、above2或bootom2为开状态的逻辑表达式的值赋值给passprintf("pass = %d\n",pass);【代码3】//bottom1和bottom2为开状态的逻辑表达式的值赋值给passprintf("pass = %d\n",pass);return 0;}实验4 托运行李baggageAndMony.c#include <stdio.h>#define TrainCharge 12#define CarCharge 22#define PlaneCharge 0.062int main() {double weight,charge;printf("输入行李重量:");scanf("%lf",&weight);printf("行李重量:%f公斤(kg)\n",weight);printf("需要计费的重量:%d(kg)\n",(int)weight);【代码1】//将表达式(int)weight*TrainCharge的值赋值给chargeprintf("用火车托运(%d元/kg),费用:%f元\n",TrainCharge,charge);printf("需要计费的重量:%d(kg)\n",(int)(weight+0.5));【代码2】】//将表达式(int)(weight+0.5)*CarCharge的值赋值给chargeprintf("用汽车托运(%d元/kg),费用:%f元\n",CarCharge,charge);printf("行李重量:%f克(g)\n",weight*1000);printf("需要计费的重量:%d(g)\n",(int)(weight*1000+0.5));【代码3】//将表达式(int)(weight*1000+0.5)*PlaneCharge的值赋值给chargeprintf("用飞机托运(%f元/g),费用:%f元\n", PlaneCharge,charge);return 0;}实验答案实验1【代码1】：a1 = ticketNumber%10;【代码2】：ticketNumber = ticketNumber/10;【代码3】：printf("a1+a2+a3+a4+a5=%d\n",a1+a2+a3+a4+a5);【代码4】：printf("a1*a2*a3*a4*a5=%d\n",a1*a2*a3*a4*a5);实验2【代码1】：unsigned short personOne,personTwo;【代码2】：energySum=personOne++*personTwo--;【代码3】：printf("第一次互相击掌产生的能量:%u\n",energySum);实验3【代码1】：pass = (above1!=0)&&(above2!=0);【代码2】：pass = (above1!=0||bottom1!=0)&&(center!=0)&&(above2!=0||bottom2!=0);【代码3】：pass = (bottom1!=0)&&(bottom2!=0);实验4【代码1】：charge = (int)weight*TrainCharge;【代码2】：charge = (int)(weight+0.5)*CarCharge;【代码3】：charge = (int)(weight*1000+0.5)*PlaneCharge;上机实践5 分支语句equation.c#include <stdio.h>#include <math.h>int main() {double a,b,c;double root1,root2;double disc;printf("输入系数a,b,c(逗号分隔):");scanf("%lf,%lf,%lf",&a,&b,&c);disc = b*b-4*a*c;if(a==0) {【代码1】//使用if-else语句，根据b是否为0输出是否为方程以及是方程时，方程的根}else {【代码2】//使用if-else语句，根据disc是否为负输出是否为二次方程以及方程的根}return 0;}实验2 商场的优惠shop.c#include <stdio.h>#define POINT1 100#define POINT2 200#define POINT3 500int main(){float amountMoney = 0;float charge = 0;printf("输入商品的总额:");scanf("%f",&amountMoney);if(amountMoney<POINT1) {charge = amountMoney;}else if(amountMoney<POINT2&&amountMoney>=POINT1){【代码1】//计算支付金额并赋值给charge}else if(amountMoney<POINT3&&amountMoney>=POINT2){【代码2】//计算支付金额并赋值给charge}else if(amountMoney>=POINT3){【代码3】//计算支付金额并赋值给charge}printf("顾客支付金额:%-20.2f\n",charge);printf("顾客节省金额:%-20.2f\n",amountMoney-charge);return 0;}实验3 四则运算computer.c#include <stdio.h>int main(){double numberOne,numberTwo = 0;char opration = '+';double result = 0;printf("输入第一个运算数、运算符号、第二个运算数(不要有任何分隔符号):\n");scanf("%lf%c%lf",&numberOne,&opration,&numberTwo);switch(opration) {case '+' :【代码1】//将numberOne+numberTwo赋值给resultprintf("%lf%c%lf=%lf\n",numberOne,opration,numberTwo,result);break;case '-' :【代码2】//将numberOne-numberTwo赋值给resultprintf("%lf%c%lf=%lf\n",numberOne,opration,numberTwo,result);break;case '*' :【代码3】//将numberOne*numberTwo赋值给resultprintf("%lf%c%lf=%lf\n",numberOne,opration,numberTwo,result);break;case '/' :result = numberOne/numberTwo;printf("%lf%c%lf=%lf\n",numberOne,opration,numberTwo,result);break;default:printf("%lf %c %lf不符合要求\n",numberOne,opration,numberTwo);}return 0;}实验4 自动售货机machineSell.c#include <stdio.h>int main() {unsigned short money;char drinkKind;printf("投入金额:2,3或5元(回车确认):");scanf("%d",&money);getchar(); //消耗回车if(money==2) {printf("选择净净矿泉水(A),甜甜矿泉水(B)和美美矿泉水(C)之一:\n");printf("输入A,B或C:");drinkKind=getchar();switch(drinkKind) {case 'A' : printf("得到净净矿泉水\n");break;case 'B' : printf("得到甜甜矿泉水\n");break;case 'C' : printf("得到美美矿泉水\n");break;default: printf("选择错误");}}else if(money==3) {printf("选择爽口可乐(A),清凉雪碧(B),和雪山果汁(C)之一:\n");printf("输入A,B或C:");drinkKind=getchar();switch(drinkKind) {case 'A' : printf("得到爽口可乐\n");break;case 'B' : printf("得到清凉雪碧\n");break;case 'C' : printf("得到雪山果汁\n");break;default: printf("选择错误");}}else if(money==5) {printf("选择草原奶茶(A),青青咖啡(B)和甜美酸奶(C)之一:\n");printf("输入A,B或C:");drinkKind=getchar();switch(drinkKind) {case 'A' : printf("得到草原奶茶\n");break;case 'B' : printf("得到青青咖啡\n");break;case 'C' : printf("得到甜美酸奶\n");break;default: printf("选择错误");}}else {printf("输入的钱币不符合要求");}return 0;}实验答案实验1【代码1】：if(b==0) {printf("不是方程\n");}else {printf("是一元一次方程,只有一个根:%f\n",-c/b);}【代码2】：if(disc>=0) {root1 = (-b+sqrt(disc))/2*a;root2 = (-b-sqrt(disc))/2*a;printf("是一元二次方程,有两个实根:%f,%f\n",root1,root2);}else {printf("是一元二次方程,没有实根\n");}实验2【代码1】：charge = POINT1+(amountMoney-POINT1)*0.9f;【代码2】：charge = POINT1+(POINT2-POINT1)*0.9f+(amountMoney-POINT2)*0.8f;【代码3】：charge = POINT1+(POINT2-POINT1)*0.9f+(POINT3-POINT2)*0.8f+(amountMoney-POINT3)*0.7f;实验3【代码1】：result = numberOne+numberTwo;【代码2】：result = numberOne-numberTwo;【代码3】：result = numberOne*numberTwo;上机实践6 循环语句实验1 数字中的各位之和与积DigitSum.c#include <stdio.h>int main(){unsigned short number;unsigned short remainder;unsigned short sum = 0,ji=1,temp=0;printf("输入一个正整数:");scanf("%d",&number);temp=number;while(number!=0) {remainder = number%10;【代码1】//将sum + remainder赋值给sum【代码2】//将ji * remainder赋值给ji【代码3】//将number/10赋值给number}printf("%u上各位数字之和是:%u\n",temp,sum);printf("%u上各位数字之积是:%u\n",temp,ji);return 0;}实验2 转动数字turnDigit.c#include <stdio.h>#include <stdlib.h>int main(){unsigned int number;unsigned int remainder,i=1,temp,save,count =1 ;unsigned short a5,a4,a3,a2,a1;//number上从高位到低位上的数字printf("输入一个正整数:");scanf("%d",&number);save = number;if(number>99999||number<9999){printf("输入的数字不符合要求\n");exit(0);}while(count<=5){do {remainder = number%10;switch(i) {case 1 :a1=remainder;break;case 2 :a2=remainder;break;case 3 :a3=remainder;break;case 4 :a4=remainder;break;case 5 :a5=remainder;break;}number = number/10;i++;} while(remainder!=0);temp = a1;a1 = a2 ;a2 = a3;a3 = a4 ;a4 = a5 ;a5 = temp;number=a5*10000+a4*1000+a3*100+a2*10+a1;printf("%u转动%u次是:%u\n",save,count,number);count++;}return 0;}实验3 计算正弦值sin.c#include <stdio.h>#include <math.h>int main(){unsigned short i;unsigned long n =1,jiecheng =1;short fuhao = 1;double sum =0,x = 1,item = x/jiecheng;double t = x*x,temp = x;printf("输入x的值(在0至π/2之间即可):");scanf("%lf",&x);item = x/jiecheng;t = x*x;temp = x;for(;item>=1E-5;) {sum = sum +fuhao*item;fuhao = -fuhao;【代码1】//将t*x赋值给x【代码2】//将n+2赋值给nfor(i=1,jiecheng=1;i<=n;i++) {jiecheng = jiecheng*i ;}【代码3】//将x/jiecheng赋值给item}printf("for语句计算结果是:\n%11.10lf\n",sum);printf("库函数计算结果是:\n%11.10lf\n",sin(temp));}实验4 猜字母游戏guessLetter.c#include <stdio.h>#include <time.h>#include <stdlib.h>int main(){char randomLetter; //随机的小写英文字母char guess; //用户的猜测char c = 'A';while(c<='Z') {printf("%3c",c);c++;}srand(time(NULL)); //用当前时间做随机种子randomLetter = rand()%26+'A';printf("\n给你一个a~z之间的字母，请猜出这个字母.\n");printf("输入你的猜测(回车确认):");guess = getchar();if(guess<='z'&&guess>='a')guess = guess-32; //变成大写字母getchar(); //消耗回车while(guess != randomLetter) {if(guess > randomLetter){printf("所猜字母大于给你的字母!\n");}else if(guess < randomLetter){printf("所猜字母小于给你的字母!\n");}printf("再输入你的猜测(回车确认):");guess = getchar();if(guess<='z'&&guess>='a')guess = guess-32; //变成大写字母getchar(); //消耗回车}printf("您猜对了，这个字母就是:%c\n",randomLetter);return 0;}实验5 记忆测试test.c#include <stdio.h>#include <stdlib.h>#include <time.h>int main(){long now;char c1,c2,c3,c4,c5,c6;char s1,s2,s3,s4,s5,s6;unsigned short score = 0,i;char ok ='y',temp;srand(time(NULL)); //用当前时间做随机种子while(ok=='y'||ok=='Y') {ok = 'n';c1 = rand()%26+'a';c2 = rand()%26+'a';c3 = rand()%26+'a';c4 = rand()%26+'a';c5 = rand()%26+'a';c6 = rand()%26+'a';printf("%c%c%c%c%c%c",c1,c2,c3,c4,c5,c6);now = clock();for( ;clock()-now<=5000;) {}printf("\r"); // 将输出光标移动到本行开头(不回行)for(i=1;i<=6;i++) //输出6个*,以便擦除曾显示的字符串printf("*");printf("输入刚才显示的字符序列(回车确认):\n");scanf("%c%c%c%c%c%c",&s1,&s2,&s3,&s4,&s5,&s6);temp =getchar(); //消耗调用户确认输入时所输入的回车if(temp!='\n') {printf("输入非法，程序退出!");exit(0);}if(c1==s1&&c2==s2&&c3==s3&&c4==s4&&c5==s5&&c6==s6) { score++;printf("恭喜，记忆力不错!\n");}else {printf("遗憾，记得不准确\n");}printf("目前得分%u:\n",score);printf("继续测试吗?输入y或n(回车确认):");ok = getchar();getchar();}}实验答案实验1【代码1】：sum = sum + remainder;【代码2】：ji = ji * remainder;【代码3】：number = number/10;实验3【代码1】：x = t*x;【代码2】：n = n+2;【代码3】：item = x/jiecheng;上机实践7 函数的结构与调用circle.c#include <stdio.h>double getCircleArea(double); //函数原型double getCircleArea(double radius) { //函数定义double area = radius*radius*3.1415926;return area;}computer.c#include <stdio.h>double getCircleArea(double); //函数原型（在该源文件中就可以调用getCircleArea函数了）int main() {double radius,height;double volume;printf("输入柱体的底圆半径和高(逗号分隔):\n");scanf("%lf,%lf",&radius,&height);【代码1】// 将getCircleArea(radius)*height赋值给volume;printf("柱体的体积:%lf\n",volume);printf("输入锥体的底圆半径和高(逗号分隔):\n");scanf("%lf,%lf",&radius,&height);【代码2】// 将getCircleArea(radius)*height/3赋值给volume;printf("锥体的体积:%lf\n",volume);return 0;}实验2 商厦与亲民小店largeShop.c#include <stdio.h>double expensiveComputer(); //函数原型double expensiveComputer() { //函数定义int m = 1;double price,sum =0;printf("这里是商厦,请依次输入商品的价格(逗号分隔).\n");printf("输入任意字母结束输入过程:\n");m=scanf("%lf,",&price);while(m!=0) {sum = sum+ price;m=scanf("%lf,",&price);}getchar();printf("实际价格总额:%lf\n",sum);return sum;}smallShop.c#include <stdio.h>double cheapnessComputer(); //函数原型double cheapnessComputer() { //函数定义int m = 1;double price,sum =0;printf("这里是亲民小店,请依次输入商品的价格(逗号分隔).\n");printf("输入任意字母结束输入过程:\n");m=scanf("%lf,",&price);while(m!=0) {sum = sum+ price;m=scanf("%lf,",&price);}getchar();printf("实际价格总额:%lf\n",sum);return sum; //返回值的类型级别高于函数类型级别，编译会有警告}buy.c#include <stdio.h>double expensiveComputer(); //函数原型int cheapnessComputer(); //函数原型int main() {double price;printf("在商厦购物:\n");【代码1】//调用expensiveComputer函数,并将返回值赋值给priceprintf("需要支付:%lf元\n",price);printf("在亲民小店购物:\n");【代码2】//调用cheapnessComputer函数,并将返回值赋值给priceprintf("需要支付:%lf元\n",price);return 0;}实验3 钻石展览diamond.c#include<stdio.h>void printDiamond(int,int);void printDiamond(int position,int size) { int i,j,number;number= 2*size-1;for(i=1;i<=size;i++) {for(j=1;j<=size-i+position;j++)printf("%2s"," ");for(j=1;j<=i;j++)printf("%4s","*");printf("\n");}for(i=size+1;i<=number;i++) {for(j=1;j<=i-size+position;j++)printf("%2s"," ");for(j=number-i;j>=0;j--)printf("%4s","*");printf("\n");}}look.c#include<stdio.h>void printDiamond(int,int);int main() {printDiamond(2,2);printDiamond(1,3);printDiamond(0,4);getchar();return 0;}实验4 日历leap.cint isLeapYear(int);int isLeapYear(int year) {int leap =0;leap = (year%4==0 && year%100!=0)||(year%400 == 0);return leap;}weekDay.c#define StartYear 1600 // //1600年的1月1日是星期六int isLeapYear(int); //本源文件需要调用的函数的原型unsigned int getWeekDay(unsigned int,unsigned int,unsigned int); //本源文件定义的函数的原型unsigned int getWeekDay(unsigned int year,unsigned int month,unsigned int dayNumber){unsigned int i,daySum =0;unsigned int weekDay;for(i=StartYear;i<=year-1;i++) {if(isLeapYear(i))daySum = daySum+366;elsedaySum = daySum+365;}for(i=1;i<=month-1;i++) {if(i==1||i==3||i==5||i==7||i==8||i==10||i==12)daySum = daySum+31;else if(i==4||i==6||i==9||i==11)daySum = daySum+30;else if(i==2) {if(isLeapYear(year))daySum = daySum+29;elsedaySum = daySum+28;}}daySum=daySum+dayNumber-1; //daySum是year/month/dayNumber与1600/01/01相差的天数switch(daySum%7) { //1600年的1月1日是星期六case 0 :weekDay = 6; //星期六break;case 1 :weekDay = 7; //星期日break;case 2 :weekDay = 1; //星期一break;case 3 :weekDay = 2; //星期二break;case 4 :weekDay = 3; //星期三break;case 5 :weekDay = 4; //星期四break;case 6 :weekDay = 5; //星期五break;}return weekDay;}calendar.c#include<stdio.h>unsigned int getWeekDay(unsigned int,unsigned int,unsigned int );int isLeapYear(int);int main() {unsigned int year,month;unsigned int weekDay;unsigned int i,dayNumber,maxDay;printf("输入日历的年(不小于1600)和月(逗号分隔):\n");scanf("%d,%d",&year,&month);weekDay = getWeekDay(year,month,1);if(month==1||month==3||month==5||month==7||month==8||month==10||month==12) maxDay=31;if(month==4||month==6||month==9||month==11)maxDay=30;if(month==2) {if(isLeapYear(year))maxDay=29;elsemaxDay=28;}printf("%5s%5s%5s%5s%5s%5s%5s\n","日","一", "二", "三", "四", "五", "六");for(i=0;i<weekDay;i++)printf("%5s","");for(i=weekDay,dayNumber=1;i<weekDay+maxDay;i++) {if(i%7==0)printf("\n");printf("%5d",dayNumber);dayNumber++;}for(i=weekDay+maxDay;i<42;i++)printf("%5s","");return 0;}实验5 有理数rational.c#include<stdio.h>double add(int,int,int,int);int gongYue(int,int); //函数原型int main() {double result;result=add(1,3,1,6);printf("\n结果用小数表示是:%lf\n",result);result=add(2,3,-1,7);printf("\n结果用小数表示是:%lf\n",result);}double add(int b,int a,int n,int m) {int x;int y;int p,q;x = b*m+a*n; //计算出分子y = a*m; //计算出分母if(x<0&&y<0) {x = -x;y = -y;}p=x/gongYue(x,y);q=y/gongYue(x,y);printf("(%d/%d)+(%d/%d)=%d/%d",b,a,n,m,p,q);return (double)p/(double)q;}int gongYue(int m,int n) {int r;int t;if(m<0) m=-m;if(n<0) n=-n;if(m<n){t=m;m=n;n=t;}r = m%n;while(r!=0){ //使用辗转相除法计算最大公约数m = n;n = r;r = m%n;}return n;}实验6 Hannoi-塔tower.c#include<stdio.h>unsigned short move(int ,char,char,char);unsigned short move(int n,char one,char two,char three) { static unsigned short count=0;count++;if(n==1) {printf("from %c to %c\n",one ,three);}else if(n>=2) {count = move(n-1,one,three,two);printf("from %c to %c\n",one ,three);count = move(n-1,two,one ,three);}return count;}int main() {unsigned short m1,m2=0;printf("\nA-座有2个盘子的情况:\n");m1 = move(2,'A','B','C');printf("小和尚共花费了%u天.\n",m1);printf("\nA-座有3个盘子的情况:\n");m2 = move(3,'A','B','C');printf("小和尚共花费了%u天.\n",m2-m1);return 0;}实验7 打开画笔openSoftware.c#include<stdio.h>#include<stdlib.h>int main() {printf("列出当前目录下的子目录和文件:\n");system("dir");printf("打开画笔:\n");system("mspaint.exe");printf("打开记事本:\n");system("notepad.exe");printf("其他软件都结束了，才能输出我:\n");getchar();return 0;}实验答案实验1【代码1】：volume = getCircleArea (radius)*height;【代码2】：volume = getCircleArea (radius)*height/3;实验2【代码1】：price = expensiveComputer();【代码2】：price = cheapnessComputer();上机实践8 数组evaluate.c.#include<stdio.h>#include<math.h>int main() {double max,min; //存放最高、最低成绩double sum =0,aver,squareAver; //存放成绩的和、平均成绩、方差int count=0,i,N;【代码1】//声明类型是double、名字是score、长度为20的一维数组N = sizeof(score)/sizeof(double);printf("输入%d人的成绩(空隔或回车分隔):\n",N);for(i=0,sum=0;i<N;i++) {scanf("%lf",&score[i]);}for(i=0;i<N;i++) {【代码2】//将sum+score[i]赋值给sum}【代码3】//将sum/N赋值给averfor(i=0,sum=0;i<N;i++) {sum = sum+(score[i]-aver)*(score[i]-aver);}squareAver = sqrt(sum/N);max=min=score[0];for(i=0,sum=0,count=0;i<N;i++) {if(score[i]>max)max=score[i];if(score[i]<min)min=score[i];if(score[i]<60)count++;}printf("平均成绩:%lf\n",aver);printf("方差:%lf\n",squareAver);printf("其中一个最高成绩:%lf\n",max);printf("其中一个最低成绩:%lf\n",min);printf("不及格人数:%d\n",count);return 0;}实验2 二进制转化为十六进制jinzhi.c#include<stdio.h>#include<math.h>#define FOUR 4int main() {int i=0,m=0,j=0;long sum=0;unsigned short a[15]={1,0,1,1,1,0,1,1,1,1,1,0,1,1,1};unsigned short b[15%FOUR?15/FOUR+1:15/FOUR];int M = sizeof(b)/sizeof(unsigned short);printf("二进制表示:");for(i=0;i<15;i++) {printf("%u",a[i]);}printf("\n");for(i=15-1,sum=0;i>=0;i--) {sum = sum+a[i]*(int)pow(2,15-(i+1));}printf("十进制表示:%ld\n",sum);for(i=15-1,j=M-1;i>=0;i=i-FOUR) {for(m=0,sum=0;m<=FOUR-1;m++) {if(i-m>=0)sum=sum+a[i-m]*(int)pow(2,m);}b[j] =(unsigned short)sum;j--;}printf("十六进制表示:");for(i=0;i<M;i++) {switch(b[i]){case 10: printf("A");break;case 11: printf("B");break;case 12: printf("C");break;case 13: printf("D");break;case 14: printf("E");break;case 15: printf("F");break;default: printf("%d",b[i]);}}return 0;}实验3 修改整数中的数字changeNumber.c#include<stdio.h>#include <math.h>#include <limits.h># define OutNumber 4# define FindNumber 0int main() {unsigned long number,change=0;short a[10]={-1};int N = sizeof(a)/sizeof(unsigned short);int i=N-1,count=0 ;for(i=0;i<N;i++) {a[i]=-1;}printf("输入1至%lu之间的数:",ULONG_MAX);scanf("%ld",&number);i = N-1;while(number!=0){a[i]=(short)(number%10);number = number/10;i--;}for(i=0;i<N;i++) {if(a[i]==OutNumber)a[i]=8;}for(i=0;i<N;i++) {if(a[i]==FindNumber)。
