哈工大C语言程序设计精髓MOOC慕课12周编程题答案

"/*下面代码的功能是将百分制成绩转换为5分制成绩，具体功能是：如果用户输入的是非法字符或者不在合理区间内的数据(例如输入的是 a,或者102，或-45等)，则程序输出Inputerror!，并允许用户重新输入,直到输入合法数据为止， 并将其转换为5分制输出。目前程序存在错误，请将其修改正确。并按照下面给出的运行示例检查程序。*/#include<>#include<>intmain(){charscore[100];intflag=0,i,s;chargrade;printf(""Pleaseinputscore:\n"");while(1){flag=0;scanf(""%s"",score);for(i=0;i<strlen(score);i++){if(score[i]>='0'&&score[i]<='9'){continue;}else{flag=1;break;}}s=atoi(score);if(s<0||s>100||flag==1){printf(""Inputerror!\n"");printf(""Pleaseinputscore:\n"");continue;}else{break;}}s=atoi(score);if(s>=90){grade='A';}elseif(s>=80){grade='B';}elseif(s>=70){grade='C';}elseif(s>=60){grade='D';}else{grade='E';}printf(""grade:%c\n"",grade);return0;}""#include<>#include<>intmain(){intn,a,i,j;doublep=0,q=0;printf(""Inputa,n:\n"");scanf(""%d,%d"",&a,&n);for(i=1;i<=n;i++){for(j=0,p=0;j<i;j++){p=p+a*pow(10,j);}q=p+q;}printf(""sum=%.0f\n"",q);return0;}"n块砖(27<n<=77)，36人搬，男搬4，女搬3，两个小孩抬一块砖，要求一次搬完，问男人、女人和小孩各需多少人请用穷举法编程求解,n的值要求从键盘输入。输出结果按照男人数量升序给出(见下面示例 3)。程序的运行结果示例1：Inputn(27<n<=77):28/men=0,women=4,children=32程序的运行结果示例 2：Inputn(27<n<=77):36/men=3,women=3,children=30程序的运行结果示例 3：Inputn(27<n<=77):60/men=2,women=14,children=20men=7,women=7,children=22men=12,women=0,children=24输入提示：""Inputn(27<n<=77):\n""输入格式:""%d""输出格式：""men=%d,women=%d,children=%d\n""*/#include""""main(){printf(""Inputn(27<n<=77):\n"");longn,i,t,s=0;scanf(""%d"",&n);inta,b,c;for(a=0;4*a<=n;a++)for(b=0;4*a+3*b<=n;b++)for(c=0;4*a+3*b+c/2<=n;c+=2)if(4*a+3*b+c/2==n&&c%2==0&&a+b+c==36){printf(""men=%d,women=%d,children=%d\n"",a,b,c);}}""#include<>intmain()

{intyear,month,day;printf(""Inputyear,month:\n"");scanf(""%d,%d"",&year,&month);switch(month){case1:day=31;break;case2:day=28;break;case3:day=31;break;case4:day=30;break;case5:day=31;break;case6:day=30;break;case7:day=31;break;case8:day=31;break;case9:day=30;break;case10:day=31;break;case11:day=30;break;day=29;case12:day=31;break;default:day=-1;printf(""Inputerror!\n"");}if((year%4==0&&year%100!=0||year%400==0)&&month==2)if(day!=-1)printf(""%ddays\n"",day);day=29;return0;}""#include<>unsignedintComputeAge(unsignedintn){}main(){inti,j,k,s=23,n,c,age;scanf(""%d"",&n);printf(""Theperson'sageis%u\n"",8+2*n);}""#include<>intgys(inta,intb){intr;r=a%b;if(r==0)returnb;elsereturngys(b,r);}main(){printf(""Inputa,b:"");inta,b;scanf(""%d,%d"",&a,&b);if(a<=0||b<=0){printf(""Inputerror!\n"");}elseprintf(""%d\n"",gys(a,b));}""#include<>intmedian(inta,intb,intc){if(a<b){if(b<c){returnb;}else{returna<cc:a;}程序运行结果示例1：Inputn:28212Repeateddigit!程序运行结果示例2：Inputn:12345/Norepeateddigit!输入提示：""Inputn:\n""输入格式:""%ld""输出格式：有重复数字，输出信息:""Repeateddigit!\n""没有重复数字，输出信息:""Norepeateddigit!\n""*/#include<>intmain(){intlog[10]={0},a[100];intb,i=0,n,c,d;printf(""Inputn:\n"");scanf(""%d"",&n);while(n!=0){b=n%10;n/=10;a[i]=b;i++;}a[i]=n;intflag=0;for(c=0;c<i;c++)for(d=c+1;d<i;d++){if(a[c]==a[d]){flag=1;break;}}max的值。str[i]!=str[i+1]，则计数器重新初始化为 1max的值。程序运行结果示例1：Inputastring:55/5:5程序运行结果示例2：Inputastring:sgf222257/2:4输入提示信息：""Inputastring:\n""输入格式：用gets()输入字符串输出格式：""%c:%d\n""*/#include<>#include<>intmain(){chara[80];intb,i,j,t=1,tl,num=0;printf(""Inputastring：\n"");gets(a);for(i=0;i<strlen(a);i++){t=1;for(j=i+1;j<strlen(a);j++){if(a[j]==a[i]){t++;}}if(i==0){tl=t;}else{if(t>tl){tl=t;num=i;}}}printf(""%c:%d\n"",a[num],tl);}"从键盘输入一串字符（假设字符数少于8个），以回车表示输入结束，编程将其中的数字部分转换为整型数并以整型的形式输出。函数原型为intMyatoi（charstr[]）;其中，形参数组str[]对应用户输入的字符串，函数返回值为转换后的整型数。解题思路的关键是：1）判断字符串中的字符是否是数字字符； 2）如何将数字字符转换为其对应的数字值；3）如何将每一个转换后的数字值加起来形成一个整型数。程序运行结果示例1：Inputastring:7hg09y /709程序运行结果示例2：Inputastring:9w2k7m0/9270程序运行结果示例3：Inputastring:happy/0输入提示信息：""Inputastring:""输入格式:""%7s""输出格式：""%d\n""*/#include<>#include<>#include<>intMyatoi(charstr[]){inti,j;for(i=0,j=0;str[i]!='\0';i++){if(str[i]>='0'&&str[i]<='9'){str[j]=str[i];j++;}}str[j]='\0';returnatoi(str);}intmain(){chars[7];printf(""Inputastring:"");scanf(""%7s"",s);printf(""%d"",Myatoi(s));printf(""\n"");return0;}""/*输入n个整数(n从键盘输入，假设n的值不超过100),按奇偶数分成两组并输出。输出两行，第一行为所有奇数，第二行为所有偶数，保持数据的相对顺序与输入顺序相同。函数原型如下所示：voidSeperate(inta[],intn);ame);printf(""Inputfinalscore:"");scanf(""%d"",&stu[i].finalScore);printf(""Inputclassscore:"");scanf(""%d"",&stu[i].classScore);getchar();printf(""Classcadreornot(Y/N):"");scanf(""%c"",&stu[i].work);getchar();printf(""StudentsfromtheWestornot(Y/N):"");scanf(""%c"",&stu[i].west);getchar();printf(""Inputthenumberofpublishedpapers:"");scanf(""%d"",&stu[i].paper);stu[i].scholarship=0;if(stu[i].finalScore>80&&stu[i].paper>=1)stu[i].scholarship+=8000;if(stu[i].finalScore>85&&stu[i].classScore>80)stu[i].scholarship+=4000;if(stu[i].finalScore>90)stu[i].scholarship+=2000;if(stu[i].finalScore>85&&stu[i].west=='Y')stu[i].scholarship+=1000;if(stu[i].classScore>80&&stu[i].work=='Y')stu[i].scholarship+=850;printf(""name:%s,scholarship:%d\n"",stu[i].name,stu[i].scholarship);}intts=stu[0].scholarship,k;for(i=1;i<n;i++){

if(ts<stu[i].scholarship){k=i;}}1）院士奖学金：期末平均成绩高于的学生每人均可获得8000元；1）院士奖学金：期末平均成绩高于的学生每人均可获得8000元；2）五四奖学金：期末平均成绩高于生每人均可获得4000元；3）成绩优秀奖：期末平均成绩高于4）西部奖学金：期末平均成绩高于5）班级贡献奖：班级评议成绩高于80分（>80），并且在本学期内发表1篇或1篇以上论文85分（>85），并且班级评议成绩高于80分（>80）的学90分（>90）的学生每人均可获得2000元；85分（>85）的西部省份学生每人均可获得 1000元；80分（>80）的学生干部每人均可获得 850元；*/return0;}""/*请编写一个简单的23根火柴游戏程序，实现人跟计算机玩这个游戏的程序。为了方便程序自动评测，假设计算机移动的火柴数不是随机的，而是将剩余的火柴根数对3求余后再加1来作为计算机每次取走的火柴数。如果计算机打算移走的火柴数等于剩下的火柴数，则将计算机打算移走的火柴数减1。但是计算机不可以不取，剩下的火柴数为 1时，必须取走1根火柴。假设游戏规则如下：1）游戏者开始拥有23根火柴棒；2）每个游戏者轮流移走1根、2根或3根火柴；3）谁取走最后一根火柴为失败者。程序运行结果示例1：Gamestart!Note:themaximumnumberis3Pleaseenterthenumberofmatchesyouaremoving:5/Thenumberyouenterediswrong，pleasere-enter!Pleaseenterthenumberofmatchesyouaremoving:3/Thenumberofmatchesyouaremovingis:3Thenumberofmatchesleftis:20Thenumberofmatchesthathavebeenmovedbythecomputeris:3Thenumberofmatchesleftis:17Pleaseenterthenumberofmatchesyouaremoving:/Thenumberofmatchesyouaremovingis:1Thenumberofmatchesleftis:16Thenumberofmatchesthathavebeenmovedbythecomputeris:2Thenumberofmatchesleftis:14Pleaseenterthenumberofmatchesyouaremoving:/Thenumberofmatchesyouaremovingis:2Thenumberofmatchesleftis:12Thenumberofmatchesthathavebeenmovedbythecomputeris:1Thenumberofmatchesleftis:11Pleaseenterthenumberofmatchesyouaremoving:/Thenumberofmatchesyouaremovingis:3Thenumberofmatchesleftis:8Thenumberofmatchesthathavebeenmovedbythecomputeris:3Thenumberofmatchesleftis:5Pleaseenterthenumberofmatchesyouaremoving:1/Thenumberofmatchesyouaremovingis:1Thenumberofmatchesleftis:4Thenumberofmatchesthathavebeenmovedbythecomputeris:2Thenumberofmatchesleftis:2Pleaseenterthenumberofmatchesyouaremoving:1/Thenumberofmatchesyouaremovingis:1Thenumberofmatchesleftis:1Thenumberofmatchesthathavebeenmovedbythecomputeris:1Thenumberofmatchesleftis:0Congratulations！Youwon!程序运行结果示例2：332131游戏开始提示信息：""Gamestart!\n""""Note:themaximumnumberis3\n""提示游戏者输入移动的火柴数：""Pleaseenterthenumberofmatchesyouaremoving:\n""游戏者输入错误数据的提示信息：""Thenumberyouenterediswrong，pleasere-enter!\n""输入格式:""%d""输出格式：输出被游戏者移动的火柴数：""Thenumberofmatchesyouaremovingis:%d\n""输出被计算机移动的火柴数：""Thenumberofmatchesthathavebeenmovedbythecomputeris:%d\n""输出被游戏者或计算机移动后剩余的火柴数：""Thenumberofmatchesleftis:%d\n""游戏者获胜的输出提示信息：""Congratulations！Youwon!\n""游戏者失败的输出提示信息：""I'msorry.Youlost!\n""*/#include<>main(){printf(""Gamestart!\nNote:themaximumnumberis3\n"");inti,j,k,s=23,n,c;while(1){printf(""Pleaseenterthenumberofmatchesyouaremoving:\n"");scanf(""%d"",&n);if(n<=3&&n>=1&&n<=s){}else{printf(""Thenumberyouenterediswrong，pleasere-enter!\n"");continue;}s-=n;printf(""Thenumberofmatchesyouaremovingis:%d\nThenumberofmatchesleftis:%d\n"",n,s);if(s>0){if(s==3){c=2;}elseif(s==2){c=1;}elseif(s==1){c=1;}else{c=s%3+1;}s-=c;printf(""Thenumberofmatchesthathavebeenmovedbythecomputeris:%d\nThenumberofmatchesleftis:%d\n"",c,s);if(s==0){printf(""Congratulations！Youwon!\n"");break;}elseif(s==0){printf(""I'msorry.Youlost!\n"");break;}}}""/*题目内容：请输入星期几的第一个字母（不区分大小写）来判断一下是星期几，如果第一个字母一样，则继续判断第二个字母 （小写），否则输出“dataerror。”程序运行结果示例1：pleaseinputthefirstletterofsomeday:s/pleaseinputsecondletter:u/sunday程序运行结果示例2：pleaseinputthefirstletterofsomeday:F/friday程序运行结果示例2：pleaseinputthefirstletterofsomeday:h/da