学生信息管理例题.docx
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学生信息管理例题.docx
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学生信息管理例题
#include
#include
usingnamespacestd;
classstudent{
public:
intxuehao;
charxingming[20];
charxingbie;
floatyuwen,shuxue,yinyu;
intshengri;
virtualintgetnianji()=0;
virtualvoidset()=0;
virtualvoiddisplay()=0;
intgetxuehao(){returnxuehao;}
char*getxingming(){returnxingming;}
chargetxingbie(){returnxingbie;}
floatgetyuwen(){returnyuwen;}
floatgetshuxue(){returnshuxue;}
floatgetyinyu(){returnyinyu;}
floatgetsum(){
return(yuwen+shuxue+yinyu);}
intgetshengri(){returnshengri;}
};
classostudent:
publicstudent{
public:
intnianji;
charzhuanye[25];
ostudent(){nianji=0;}
intgetnianji(){returnnianji;}
char*getzhuanye(){returnzhuanye;}
voidset(){cout<<"输入一年级学生信息\n"
<<"学号姓名性别(m/w)专业语文数学英语出生年\n";
cin>>xuehao>>xingming>>xingbie>>zhuanye>>yuwen>>shuxue>>yinyu>>shengri;
}
voiddisplay(){
cout<<"\n一年级学生:
\n"< < } friendostream&operator<<(ostream&out,ostudent&right){ out< < <<(2009-right.shengri)< returnout; } friendistream&operator>>(istream&in,ostudent&right){ in>>right.xuehao>>right.xingming>>right.xingbie>>right.zhuanye>>right.yuwen >>right.shuxue>>right.yinyu>>right.shengri; returnin; } }; clasststudent: publicstudent{ public: intnianji; charteacher[25]; tstudent(){nianji=1;} char*getteacher() {returnteacher;} intgetnianji(){returnnianji;} voidset() { cout<<"输入二年级学生信息\n" <<"学号姓名性别(m/w)老师语文数学英语出生年\n"; cin>>xuehao>>xingming>>xingbie>>teacher>>yuwen>>shuxue>>yinyu>>shengri; } voiddisplay(){ cout<<"\n二年级学生: \n"< < } friendostream&operator<<(ostream&out,tstudent&right){ out< < <<(2009-right.shengri)< returnout; } friendistream&operator>>(istream&in,tstudent&right){ in>>right.xuehao>>right.xingming>>right.xingbie>>right.teacher>>right.yuwen >>right.shuxue>>right.yinyu>>right.shengri; returnin; } }; intmain() { intgetin,j; intc1,c2,c3,c4,c5,c6,c7; student*p[100]; inthao[100],htp; intm,n; doublezong[100],ztp; staticinti=0; lab2: cout<<"1.录入信息\n"; cout<<"2.显示全部学生\n"; cout<<"3.计算平均成绩\n"; cout<<"4.删除一个学生\n"; cout<<"5.按年级输出学生信息\n"; cout<<"6.按姓名检索学生\n"; cout<<"7.按总分排序\n"; cout<<"\n\n输入您的选择(1to7): "; cin>>getin; switch(getin) { case1: lab1: cout<<"1.录入一年级学生信息"< cout<<"2.录入二年级学生信息"< cout<<"3.保存所有信息"< cout<<"4.返回上一级菜单"< cout<<"选择: "; cin>>c1; cout< switch(c1) { case1: { p[i]=newostudent; p[i]->set(); i++; gotolab1; } case2: { p[i]=newtstudent; p[i]->set(); i++; gotolab1; } case3: for(j=0;j { if(p[j]->getnianji()==1) cout< getxuehao()<<""< getxingming()<<"" < getxingbie()<<""< getyuwen()<<""< getshuxue() <<""< getyinyu()<<""<<2009-p[j]->getshengri()< if(p[j]->getnianji()==0) cout< getxuehao()<<""< getxingming()<<"" < getxingbie()<<""< getyuwen()<<""< getshuxue() <<""< getyinyu()<<""<<2009-p[j]->getshengri()< } cout<<"保存成功! \n"; gotolab1; default: gotolab2; } break; case2: cout<<"学生信息\n" <<"学号姓名性别(m/w)专业/老师平均成绩年龄\n"; for(j=0;j { p[j]->display(); } cout<<"\n\n输入任意数字返回主菜单: "; cin>>c2; switch(c2) { case1: case2: case3: default: gotolab2; } case3: cout< cout<<"------计算平均成绩-----\n"; cout<<"1.语文平均成绩\n"; cout<<"2.数学平均成绩\n"; cout<<"3.英语平均成绩\n"; cout<<"-----------------------\n"; cout<<"你的选择: "; cin>>c3; switch(c3) { case1: { doublesumy=0; for(j=0;j { sumy=sumy+p[j]->getyuwen(); } cout<<"\n语文平均成绩: "<<(sumy/i)< break; } case2: { doublesume=0; for(j=0;j { sume=sume+p[j]->getshuxue(); } cout<<"\n数学平均成绩: "<<(sume/i)< break; } case3: { doublesumm=0; for(j=0;j { summ=summ+p[j]->getyinyu(); } cout<<"\n英语平均成绩: "<<(summ/i)< break; } default: gotolab2; } cout<<"\n\n输入任意数字返回主菜单: "; cin>>c3; switch(c3) { case1: case2: case3: default: gotolab2; } case4: cout< cout<<"------删除一个学生-----\n"; cout<<"1.按学号删除\n"; cout<<"2.按姓名删除\n"; cout<<"3.返回上级\n"; cout<<"-----------------------\n"; cout<<"你的选择: "; cin>>c4; switch(c4) { case1: intxuehao; cout<<"输入学生的学号: "; cin>>xuehao; for(j=0;j { if(p[j]->getxuehao()==xuehao) { for(intdel=j;del p[del]=p[del+1]; i--; } } cout<<"\n成功删除.......! \n"; cout<<"\n\n输入任意数字返回主菜单: "; cin>>c3; switch(c3) { case1: case2: case3: default: gotolab2; } case2: charming[20]; cout<<"输入学生的姓名: "; cin>>ming; for(j=0;j { if(strcmp(p[j]->getxingming(),ming)==0) { for(intdel=j;del p[del]=p[del+1]; i--; } } cout<<"\n成功删除........! \n"; cout<<"\n\n输入任意数字返回主菜单: "; cin>>c3; switch(c3) { case1: case2: case3: default: gotolab2; } default: gotolab2; } case5: cout<<"\n\n\n"; cout<<"---------按年级输出学生信息---------\n"; cout<<"1.按一年级学生输出学生信息\n"; cout<<"2.按二年级学生输出学生信息\n"; cout<<"------------------------------------\n"; cout<<"你的选择: "; cin>>c5; switch(c5) { case1: cout<<"学号姓名性别专业平均成绩年龄\n"; for(j=0;j { if(p[j]->getnianji()==0) p[j]->display(); } cout<<"\n输入任意数字返回主菜单: "; cin>>c5; switch(c5) { case1: case2: case3: default: gotolab2; } case2: cout<<"学号姓名性别老师平均成绩年龄\n"; for(j=0;j { if(p[j]->getnianji()==1) p[j]->display(); } cout<<"\n输入任意数字返回主菜单: "; cin>>c5; switch(c5) { case1: case2: case3: default: gotolab2; } default: cout<<"\n输入错误! \n"; break; cout<<"\n输入任意数字返回主菜单: "; cin>>c5; switch(c5) { case1: case2: case3: default: gotolab2; } } case6: cout<<"\n\n\n\n\n\n"; charxingm[20]; cout<<"输入学生的姓名: "; cin>>xingm; for(j=0;j { if(strcmp(p[j]->getxingming(),xingm)==0) { p[j]->display(); } } cout<<"\n\n输入任意数字返回主菜单: "; cin>>c6; switch(c6) { case1: case2: case3: default: gotolab2; } case7: for(intci=0;ci { hao[ci]=p[ci]->getxuehao(); zong[ci]=p[ci]->getsum(); } for(n=0;n { for(m=n+1;m { if(zong[n]>zong[m]) { htp=hao[m]; hao[m]=hao[n]; hao[n]=htp; ztp=zong[m]; zong[m]=zong[n]; zong[n]=ztp; } } } cout< cout<<"---------按总分排序--------\n"; cout<<"学生学号总分\n"; for(j=0;j { cout<<""< < } cout<<"\n\n输入任意数字返回主菜单: "; cin>>c7; switch(c7) { case1: case2: case3: default: gotolab2; } } for(j=0;j deletep[j]; return0; }
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