C++学生成绩管理系统

1、#include#include#include#includeusingnamespacestd;/声明抽象类Person类classPersonpublic:Person();Person();virtualvoidsetperson()=0;virtualvoidgetperson()=0;/声明学生信息类classStudent:publicPerson/公有继承public:Student();Student();voidsetnumber(intnum)number=num;voidsetname(char*n)strcpy(name,n);voidsetgrade(char*g)

2、strcpy(grade,g);intgetnumber()returnnumber;char*getname()returnname;char*getgrade()returngrade;voidsetstudent()/输入函数coutnumber;coutname;coutgrade;private:charname20;chargrade20;/学生姓名/学生所在班级/纯虚函数输入信息/纯虚函数输出信息intnumber;/学生学号;/声明成绩类classScorepublic:Score();Score();voidsetenglish(floatE)english=E;voidse

3、tmath(floatM)math=M;voidsetphysics(floatP)physics=P;voidsetsports(floatS)sports=S;voidsetcomputer(floatC)computer=C;floatgetenglish()returnenglish;floatgetmath()returnmath;floatgetphysics()returnphysics;floatgetsports()returnsports;floatgetcomputer()returncomputer;voidsetscore()/输入函数coutenglish;cout

4、math;coutphysics;coutsports;coutvv请输入C+成绩:；cincomputer;floattotal()；/计算学分绩private:floatenglish；floatmath；floatphysics；floatsports；floatcomputer；floatScore:total()floatzong;zong=english*2+math*4+physics*4+sports*1+computer*3;returnzong/14.0;/声明学生成绩信息类classstuscore:publicStudent,publicScore/多重继承public

5、:stuscore();stuscore();voidsetstuscore();/输入学生成绩信息voidprintf1()coutgetnumber()getname()getenglish();voidprintf2()coutgetnumber()getname()getmath();voidprintf3()coutgetnumber()getname()getphysics();voidprinft4()coutgetnumber()getname()getsports();voidprintf5()coutgetnumber()getname()getcomputer();voi

6、dprint()coutgetnumber()getname()getenglish()getphysics()getsports()getcomputer()endl;voidstuscore:setstuscore()/定义输入函数setstudent();setscore();voidmenu();intfunc1(stuscorestusco);voidfunc2(stuscorestusco,intm);voidfunc3(stuscorestusco,intm);voidfunc4(stuscorestusco,intm);voidfunc5(stuscorestusco,intm

7、);inti=-1;intf;intnumber;getmath()cout*3.学生成绩修改*endl;charname20;floatenglish;floatmath;floatphysics;floatsports;floatcomputer;/主函数voidmain()stuscorestusco20;intn;menu();cout请输入17之间的数字endl;coutn;while(1)switch(n)case1:f=func1(stusco);break;case2:func2(stusco,f);break;case3:func3(stusco,f);break;case4

8、:func4(stusco,f);break;case5:func5(stusco,f);break;case7:exit(0);/主菜单函数voidmenu()system(colorD);cout欢迎进入学生成绩管理系统！endl;cout|*|endl;cout学生成绩管理系统endl;cout|*|endl;cout*1.学生成绩录入*endl;cout*2.学生成绩查询*endl;cout*4.单科所有学生成绩查询*endl;cout*5.单科成绩统计*endl;cout*（平均成绩及各个成绩区间所占比例）*endl;cout*6.学生总成绩排名*endl;cout*7.退出系统*e

9、ndl;coutendl;/录入成绩函数intfunc1(stuscorestusco)charp;doi+;stuscoi.setstuscore();cout输入成功！;cout是否还要继续输入(继续输入请按y，退出请按n):p;while(p=y);returni+1;/查询成绩函数voidfunc2(stuscorestusco)intk;cout1按姓名查询endl;cout2按学号查询endl;coutk;if(k=1)charn=y;intu10;while(n=y)intj=0;coutname;intt=0;for(;tf;t+)if(strcmp(name,stuscot.

10、getname()=0)j+;if(j=0)cout没有你要查询的学生名字!;/没有找到cout是否退出？退出请按nn;for(intb=0;bj;b+)if(j2)stuscot.getenglish()stuscot.getmath()stuscot.getphysics()stuscot.getcomputer()stuscot.total()endl;cout是否继续查询(继续请按y,退出按n):n;elset=ub;if(k=2)charn=y;while(n=y)intj=0;coutnumber;intt=0;for(;tf;t+)cout分绩endl;coutt=ub;学号姓名

11、英语数学物理体育C+学stuscot.getnumber()stuscot.getname()uj=t;stuscot.getsports()if(number=stuscot.getnumber()cout学号姓名英语数学物理体育C+学分绩endl;coutstuscot.getnumber()stuscot.getname()stuscot.getenglish()stuscot.getmath()stuscot.getphysics()stuscot.getsports()stuscot.getcomputer()stuscot.total()endl;cout是否继续查询(继续请按y,

12、退出按n):n;elsecout没有你要查询的学生！;cout是否退出？退出请按nn;/修改信息函数voidfunc3(stuscorestusco,intm)intj=0,b20,r;intflag;charn=y;while(n=y)coutnumber;flag=0;intd;for(intt=0;tm;t+)if(number=stuscot.getnumber()dobj=t;cout请选择要修改的信息:endl;cout1.修改英语成绩endl;cout2.修改数学成绩endl;cout3.修改物理成绩endl;cout4.修改体育成绩endl;cout5.修改C+成绩endl;c

13、outd;if(d=1)coutenglish;stuscot.setenglish(english);elseif(d=2)coutmath;stuscot.setmath(math);elseif(d=3)coutphysics;stuscot.setphysics(physics);elseif(d=4)coutsports;stuscot.setsports(sports);elseif(d=5)coutvv请输入新的C+成绩：;cincomputer;stuscot.setcomputer(computer);flag=1;j+;while(d5);if(flag=0)cout没有您

14、要找的学生！endl;coutn;elsecoutn;cout修改后的学生成绩:endl;cout学号姓名英语数学物理体育C+endl;for(intt=0;tj;t+)r=bt;stuscor.print();/单科所有学生成绩查询voidfunc4(stuscorestusco,intm)intk;charn=y;while(n=y)cout1.英语endl;cout2.数学endl;cout3.物理endl;cout4.体育endl;cout5.C+endl;coutendl;coutk;if(k=1)for(intt=0;tm;t+)stuscot.printf1();elseif(k

15、=2)for(intt=0;tm;t+)stuscot.printf2();elseif(k=3)for(intt=0;tm;t+)stuscot.printf3();elseif(k=4)for(intt=0;tm;t+)stuscot.prinft4();elseif(k=5)for(intt=0;tn;voidfunc5(stuscorestusco,intm)intk;floatexcellence;floatwell;floatpass;floatfail;intexc=0,wel=0,pas=0,fai=0;cout1.英语endl;cout2.数学endl;cout3.物理end

16、l;cout4.体育endl;cout5.C+endl;coutendl;coutk;if(k=1)for(intt=0;t=85)+exc;elseif(stuscot.getenglish()=70)+wel;elseif(stuscot.getenglish()=60)+pas;elseif(stuscot.getenglish()60)+fai;excellence=exc/m;well=wel/m;pass=pas/m;fail=fai/m;cout英语成绩统计结果为endl;cout优秀率：excellenceendl;cout良好率：wellendl;cout及格率：passen

17、dl;cout不及格率：failendl;elseif(k=2)for(intt=0;t=85)+exc;elseif(stuscot.getmath()=70)+wel;elseif(stuscot.getmath()=60)+pas;elseif(stuscot.getmath()60)+fai;excellence=exc/m;well=wel/m;pass=pas/m;fail=fai/m;cout数学成绩统计结果为endl;cout优秀率：excellenceendl;cout良好率：wellendl;cout及格率：passendl;cout不及格率：failendl;elseif

18、(k=3)for(intt=0;t=85)+exc;elseif(stuscot.getphysics()=70)+wel;elseif(stuscot.getphysics()=60)+pas;elseif(stuscot.getphysics()60)+fai;excellence=exc/m;well=wel/m;pass=pas/m;fail=fai/m;cout物理成绩统计结果为endl;cout优秀率：excellenceendl;cout良好率：wellendl;cout及格率：passendl;cout不及格率：failendl;elseif(k=4)for(intt=0;t=85)+exc;elseif(stuscot.getsports()=70)+wel;elseif(stuscot.getsports()=60)+pas;elseif(stuscot.getsports()60)+fai;excellence=exc/m;well=wel/m;pass=pas/m;fail=fai/m;cout体育成绩统计结果为endl;cout优秀率：excellenceendl;cout良好率：wellendl;cout及格率：passendl;cout不及