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Mooc课后习题集 及 做到的一些有趣的题

这是我初学c开始有意识的记录自己做的每一道题开始写下的代码水平 一个一个代码发出来 直到我现在学的数据结构 那个时候还不会注释 格式什么的也是按照自己怎么喜欢怎么来 如果真不会看会代码理解一下 qwq 如代码有错请见谅 毕竟都好久以前敲得了hhh ~~

#include 
   
    #include 
    
     #define len 30void Input_record(int number,int name[len],int  score[len]);void TotalandaverageScoreofCourse(int number,int  score[len]);void OrderName(int number,int name[len]);void OrderScore(int number,int score[len]);void SearchScore(int number,int name[len],int score[len]);void Analyis(int number,int score[len]);void Listrecord(int number,int name[len],int score[len]);int main(){
       int option,number;    printf("Input student number(n<30):\n");    scanf("%d",&number);    int  score[len]={
   0};    int name[len]={
   0};    do{
           printf("Management for Students' scores\n\n1.Input record\n\n2.Caculate total and average score of course\n\n3.Sort in descending order by score\n\n4.Sort in ascending order by number\n\n5.Search by number\n\n6.Statistic analysis\n\n7.List record\n\n0.Exit\n\nPlease Input your choice:");        scanf("%d",&option);        switch(option)        {
               case 1:Input_record(number,name,score);break;            case 2:TotalandaverageScoreofCourse(number,score);break;            case 3:OrderScore(number,score);break;            case 4:OrderName(number,name);break;            case 5:SearchScore(number,name,score);break;            case 6:Analyis(number,score);break;            case 7:Listrecord(number,name,score);break;            case 0:break;            default:printf("false number plz input again!\n");break;        }    }while(option!=0);    printf("You choose to exit\nThanks for using this code\n:)");    return 0;}void Input_record(int number,int name[len],int  score[len]){
       int i;    printf("Input student's ID, name and score:\n");    for(i=0;i<=number-1;i++)    {
           scanf("%d%*c%d",&name[i],&score[i]);    }    printf("\n\n\n");}void TotalandaverageScoreofCourse(int number,int score[len]){
       float sum=0;    int i;    for(i=0;i<=number-1;i++)    {
           sum=sum+score[i];    }    printf("sum=%.0f,aver=%.2f\n",sum,sum/number);    printf("\n\n\n");}void OrderName(int number,int name[len]){
       int i,j,temp=name[0],copy[len]={
   0};    memcpy(copy,name,sizeof(int)*number);    for(i=0;i<=number-2;i++)    {
           for(j=i+1;j<=number-1;j++)        {
               if(copy[i]>copy[j])            {
                   temp=copy[i];                copy[i]=copy[j];                copy[j]=temp;            }        }    }        for(i=0;i<=number-1;i++)    {
           printf("%d\n",copy[i]);    }    printf("\n\n\n");}void OrderScore(int number,int score[len]){
       int i,j,temp=0,copy[len]={
   0};    memcpy(copy,score,sizeof(int)*number);    for(i=0;i<=number-2;i++)    {
           for(j=i+1;j<=number-1;j++)        {
               if(copy[i]>copy[j])            {
                   temp=copy[i];                copy[i]=copy[j];                copy[j]=temp;            }        }    }    for(i=0;i<=number-1;i++)    {
           printf("%d\n",copy[i]);    }    printf("\n\n\n");}void SearchScore(int number,int name[len],int score[len]){
       int i,inputname;    scanf("%d",&inputname);    for(i=0;i<=number-1;i++)    {
           if(name[i]==inputname)        {
               printf("%d  %d",name[i],score[i]);            printf("\n\n\n");            break;        }    }    if(i==number && name[i-1]!=inputname)    {
           printf("No found!");        printf("\n\n\n");    }}void Analyis(int number,int score[len]){
       int i,lv1=0,lv2=0,lv3=0,lv4=0,lv5=0,lvgod=0;    for(i=0;i<=number-1;i++)    {
           if(score[i]>100 ||score[i]<0)            lvgod++;        else if(score[i]<=100 && score[i]>=90)            lv1++;        else if(score[i]<90 && score[i]>=80)            lv2++;        else if(score[i]<80 && score[i]>=70)            lv3++;        else if(score[i]<70 && score[i]>=60)            lv4++;        else            lv5++;    }    printf("lv1 (90~100) : %d\n",lv1);    printf("lv2 (80~90) : %d\n",lv2);    printf("lv3 (70~80) : %d\n",lv3);    printf("lv4 (60~70) : %d\n",lv4);    printf("lv5 (0~60) : %d\n",lv5);    printf("lv6 (god score) : %d\n",lvgod);    printf("\n\n\n");}void Listrecord(int number,int name[len],int score[len]){
       int i;    for(i=0;i<=number-1;i++)    {
           printf("%d %d\n",name[i],score[i]);    }    printf("\n\n\n");}
    
   

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