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253 lines
7.7 KiB
253 lines
7.7 KiB
2 weeks ago
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#include<stdio.h>
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#include<string.h>
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struct student
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{
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char num[10];
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float Math;
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float Physic;
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float English;
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float sum;
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float ave;
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int clas;
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int inserted;//sign whether the student is inserted
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char name[10];
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int mod;//sign whether the student is modified
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};
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void outputstudent4(struct student *t)// output num,class,name,and grade of all subject
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{
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printf("%s %d %s %.1f %.1f %.1f\n",t->num,t->clas,t->name,t->Math,t->Physic,t->English);
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}
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void orderstudent2(struct student *t,int n)//order with class
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{
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for(int i=0;i<n;i++)
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{
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for(int j=i;j<n;j++)
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{
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if((t+i)->clas>(t+j)->clas)
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{
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struct student m;
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m=*(t+i);
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*(t+i)=*(t+j);
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*(t+j)=m;
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}
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}
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}
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for(int i=0;i<n;i++)
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{
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for(int j=i;j<n;j++)
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{
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if((t+i)->clas==(t+j)->clas&&(t+i)->sum<(t+j)->sum)
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{
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struct student m;
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m=*(t+i);
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*(t+i)=*(t+j);
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*(t+j)=m;
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}
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}
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}
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}
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void findstudent(struct student *t)
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{
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char c[30];
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fgets(c,sizeof(c),stdin);
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if(c[0]=='1')
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{
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int beginclass=0;
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int i=1;
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while(c[i]!='-')
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{
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if(c[i]>='0'&&c[i]<='9')
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{
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beginclass*=10;
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beginclass+=c[i]-'0';
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}
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i++;
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}
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int finalclass=0;
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int j=i+1;
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while(c[j]>='0'&&c[j]<='9')
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{
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finalclass*=10;
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finalclass+=c[j]-'0';
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j++;
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}
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for(int i=0;i<7;i++)
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{
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if((t+i)->clas>=beginclass&&(t+i)->clas<=finalclass)
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outputstudent4((t+i));
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}
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}
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if(c[0]=='2')
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{
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char beginnum[10]={'\0'};
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int i=1,x=0;
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while(c[i]!='-')
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{
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if(c[i]>='0'&&c[i]<='9')
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{
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beginnum[x]=c[i];
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x++;
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}
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i++;
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}
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char finalnum[10]={'\0'};
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int j=i+1,y=0;
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while(c[j]>='0'&&c[j]<='9')
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{
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finalnum[y]=c[j];
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y++;
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j++;
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}
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for(int m=0;m<7;m++)
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{
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if(strcmp((t+m)->num,beginnum)>=0&&strcmp((t+m)->num,finalnum)<=0)
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outputstudent4((t+m));
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}
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}
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if(c[0]=='3')
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{
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char f[10]={'\0'};
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int i=1,x=0;
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while(c[i]!='*')
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{
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if(c[i]!=' ')
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{
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f[x]=c[i];
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x++;
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}
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i++;
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}
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for(int j=0;j<7;j++)
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{
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if(strncmp((t+j)->name,f,x)==0)
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outputstudent4((t+j));
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}
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}
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if(c[0]=='4')
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{
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float s=0;
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int i=1;
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while(c[i]!='.')
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{
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if(c[i]>='0'&&c[i]<='9')
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{
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s=s*10;
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s+=c[i]-'0';
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}
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i++;
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}
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int j=i+1,n=10;
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while(c[j]>='0'&&c[j]<='9')
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{
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s+=(1.0*(c[j]-'0'))/(1.0*n);
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n=n*10;
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j++;
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}
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for(int x=0;x<7;x++)
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{
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if((t+x)->sum>=s)
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outputstudent4((t+x));
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}
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}
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if(c[0]=='5')
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{
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int beginclass=0;
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int m=1;
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while(c[m]!='.')
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{
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if(c[m]>='0'&&c[m]<='9')
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{
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beginclass*=10;
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beginclass+=c[m]-'0';
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}
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m++;
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}
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char beginnum[10]={'\0'};
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int i=m+1,x=0;
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while(c[i]!='-')
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{
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if(c[i]>='0'&&c[i]<='9')
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{
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beginnum[x]=c[i];
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x++;
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}
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i++;
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}
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char finalnum[10]={'\0'};
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int j=i+1,y=0;
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while(c[j]>='0'&&c[j]<='9')
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{
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finalnum[y]=c[j];
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y++;
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j++;
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}
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for(int e=0;e<7;e++)
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{
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if((t+e)->clas==beginclass&&(strcmp((t+e)->num,beginnum)>=0&&strcmp((t+e)->num,finalnum)<=0))
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outputstudent4((t+e));
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}
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}
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}
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int main()
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{
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struct student s[10];
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strcpy(s[0].num,"10001");
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strcpy(s[0].name,"Zhang");
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s[0].clas=11;
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s[0].Math=99.5;
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s[0].Physic=88.5;
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s[0].English=89.5;
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s[0].sum=s[0].Math+s[0].Physic+s[0].English;
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s[0].inserted=0;
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strcpy(s[1].num,"10002");
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strcpy(s[1].name,"Yang");
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s[1].clas=12;
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s[1].Math=77.9;
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s[1].Physic=56.5;
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s[1].English=87.5;
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s[1].sum=s[1].Math+s[1].Physic+s[1].English;
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s[1].inserted=0;
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strcpy(s[2].num,"10003");
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strcpy(s[2].name,"Liang");
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s[2].clas=11;
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s[2].Math=92.5;
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s[2].Physic=99.0;
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s[2].English=60.5;
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s[2].sum=s[2].Math+s[2].Physic+s[2].English;
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s[2].inserted=0;
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strcpy(s[3].num,"10004");
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strcpy(s[3].name,"Cai");
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s[3].clas=11;
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s[3].Math=89.6;
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s[3].Physic=56.9;
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s[3].English=90.5;
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s[3].sum=s[3].Math+s[3].Physic+s[3].English;
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s[3].inserted=0;
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strcpy(s[4].num,"10005");
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strcpy(s[4].name,"Fu");
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s[4].clas=14;
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s[4].Math=55.6;
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s[4].Physic=67.9;
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s[4].English=98.9;
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s[4].sum=s[4].Math+s[4].Physic+s[4].English;
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s[4].inserted=0;
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strcpy(s[5].num,"10006");
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strcpy(s[5].name,"Mao");
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s[5].clas=12;
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s[5].Math=22.1;
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s[5].Physic=45.9;
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s[5].English=99.2;
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s[5].sum=s[5].Math+s[5].Physic+s[5].English;
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s[5].inserted=0;
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strcpy(s[6].num,"10007");
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strcpy(s[6].name,"Zhan");
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s[6].clas=13;
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s[6].Math=35.6;
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s[6].Physic=67.9;
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s[6].English=88.0;
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s[6].sum=s[6].Math+s[6].Physic+s[6].English;
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s[6].inserted=0;
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orderstudent2(&s[0],7);
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findstudent(&s[0]);
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return 0;
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}
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