#include #include #include #include void input(); void delete1(); void select1(); void order(); void output(); void output1(); void quit(); void menu(); int sum=0; struct stu { int Id; int clas; char name[100]; float score1; float score2; float score3; float score; }stu[1000]; int main() { while(1) { menu(); } } void menu() { printf(" 1.Input\n"); printf(" 2.delete\n"); printf(" 3.select\n"); printf(" 4.order\n"); printf(" 5.output\n"); printf(" 6.quit\n"); printf(" please input your option\n"); int t; scanf("%d",&t); switch(t) { case 1:input();break; case 2:delete1();break; case 3:select1();break; case 4:order();break; case 5:output();break; case 6:quit();break; } } void input() { sum=sum+1; printf("Id "); scanf("%d",&stu[sum].Id); printf("class "); scanf("%d",&stu[sum].clas); printf("name "); scanf("%s",&stu[sum].name); printf("score1 "); scanf("%f",&stu[sum].score1); printf("score2 "); scanf("%f",&stu[sum].score2); printf("score3 "); scanf("%f",&stu[sum].score3); stu[sum].score=stu[sum].score3+stu[sum].score2+stu[sum].score1; printf("continue?\n"); char a[10]; scanf("%s",&a); if(a[0]=='y'&&a[1]=='e'&&a[2]=='s') { input(); } else if(a[0]=='n'&&a[1]=='o') { menu(); } } void delete1() { printf("please input the id or name of the deleted person\n"); char b[100]; scanf("%s",&b); int c=-56356,f=1,len1,len=strlen(b); if(b[0]>'0'&&b[0]<'9') { c=0; for(int k=0;k1) { for(int i=1;i<=sum;i++) { f=1; len1=strlen((stu[i].name)); for(int x=0;xstu[j].clas) { stu[sum+1]=stu[i]; stu[i]=stu[j]; stu[j]=stu[sum+1]; } else if(stu[i].clas==stu[j].clas) { if(stu[i].Id>stu[j].Id) { stu[sum+1]=stu[i]; stu[i]=stu[j]; stu[j]=stu[sum+1]; } } } } output(); } void output() { for(int i=1;i<=sum;i++) { printf("%d %d %s %.1f %.1f %.1f %.1f\n",stu[i].Id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score); } menu(); } void output1() { for(int i=1;i<=sum;i++) { printf("%d %d %s %.1f %.1f %.1f %.1f\n",stu[i].Id,stu[i].clas,stu[i].name,stu[i].score1,stu[i].score2,stu[i].score3,stu[i].score); } } void quit() { exit(0); }