c语言学生管理系统（Clanguagestudentmanagementsystem）

c语言学生管理系统(Clanguagestudentmanagementsystem)includesstdio.h><includesstring,h><includesstdlib.h><definen200voidadd();//okvoidrevise();//okvoidprint();//okvoidsort();//okvoidsearch();//okint(continuous);//okintcomeback();//okdoubleace();//okdoublesum();//okvoidanalysis();//okvoidanalysis2();//okstructstudentcharsystem[15].charclas[15].charid[15].charname[10].doublemath.doubleeng.doublech;doublesum;doubleave;stu[n]};intn=0;intmain()menu:system（"cis"）;intx;printf（" 欢迎来到学生信息管理系统 \n"）;printf（"1.增加学生Xn"）;printf（"2.查询学生\n"）;printf（"3.修改学生\n"）;printf（"4.显示学生\n"）;printf（"5.分析数据Xn"）;printf（"6.科目分析\n"）;printf（"7.排序\n"）;printf（"0.退出Xn"）;printf（"请输入你的操作:"）；scanf（"%d",&x）;switch（x）add();if(comeback())gotomenu;break;search();if(comeback())gotomenu;break;revise();if(comeback())gotomenu;break;print();if(comeback())gotomenu;break;analysis();if(comeback())gotomenu;break;analysis2();if(comeback())gotomenu;break;sort();if(comeback())gotomenu;break;case0.printf("退出ー欢迎再次使用、n");return0;)return0;)intcomeback()iintkey;intkey2;printf(〃是否返回菜单?(1):是/0:否)'n〃);printf("请输入:");scanf("%d"&key);if(k==1)returnkey.else{printf("是否确定退出?(1):是/0:否)\n");printf("请输入:〃);scanf("%d”,&key2);if(key2==0)return1;else(printf("欢迎再次使用~ヽn〃)；return0;doublesum(inta)returnstu[a].math+stu[a].eng+stu[a].ch;)doubleave(inta){return(stu[a].math+stu[a].eng+stu[a].ch)/3);}voidadd()(system("cis");printf(- 欢迎来到增加信息模块42(12)\n");printf（"已录入学生人数为:%d人、n",n）;printf(”请输入学院:“)；scanf('%s",stu[n].system);printf("请输入班级:“)；scanf("%s",stu[n].clas);printf(“请输入学号:“)；scanf("%s",stu[n].id);printf("请输入姓名:");scanf('%s",stu[n].name);printf("请输入数学成绩;")；scanf("%If",&stu[n].math);printf("请输入英语成绩:〃)；scanf("%If",&stu[n].eng);printf("请输入语文成绩:")；scanf("%If",&stu[n].ch);stu[n].sum=sum(n).stu[n].ave=ave(n).//printf("%s%s%s%s%.2If%.21f%.21f%.21f%.21f\n",stu[n][n].clas.systeml,stu,stu,stu.id[n],[n][n].mathname,stu,stu,stu.eng[n],[n][n].sumyear,stu,stu[n].ave);n++;printf("添加成功\n\n");if(continue)add();)voidsearch()//查(system("cis");charsea[20].intnum;inta=0;intkey;intxx=0;printf（〃 欢迎来到查找信息模块n"）;printf（"1.按学院查\n"）;printf（"2.按班级查\n"）;printf（"3.按姓名查\n"）;printf（"4.按学号查\n"）;printf（"请输入你需要的:"）;scanf（）（"%d"&num）;switch（num）{printf（“请输入查找的学院:“）；scanf（）（"%s"sea）;for（i=0;i<n;i++）if(strcmp(sea,stu[i].system)==0)if(xx==0)printf（〃 \ぺ）；printf（〃学院班级学号姓名数学英语语文总分平均分、n"）;xx++;printf("%s%68%%%%.21f13pp5s.2If%.2If%.2If%.21f\n”,stu[i],[i].clas.system,stu,stu,stu.id[i],[i],[i].mathname,stu,stu,stu.eng[i],[i]year[i].sum,stu,stu[i].ave);if(a==0)printf("无相关信息〜\n");if(continue)search();break;printf(”请输入查找的班级:つ;scanf()("%s"sea);for(i=0;i<n;i++)[if(strcmp(sea,stu[i].clas)==0)Iif(xx==0){printf(〃 \n");printf(“学院班级学号姓名数学英语语文总分平均分、n");xx++;)printf("%s%68%%%%,21f13pp5s.2If%.2If%.2If%.21f\n",stu[i],[i].clas.system,stu,stu,stu.id[i],[i],[i].mathname,stu,stu,stu.eng[i],[i]year[i].sum,stu,stu[i].ave);a++;))if(a==0)printf("无相关信息〜\n");if(continue)search();break;printf（”请输入査找的姓名:"）;scanf()("%s"sea);for(i=0;i<n;i++)(if(strcmp(sea,stu[i]name)==0)!if(xx==0)(printf \n");printf("学院班级学号姓名数学英语语文总分平均分、n")；xx++;)printf("%s%68%%%%.21f13pp5s.2If%.2If%.2If%.21f\n",stu[i],[i].clas.system,stu,stu,stu.idLi],[i],[i].mathname,stu,stu,stu.eng[i],[i]year[i].sum,stu,stu[i].ave);if(a==0)printf("无相关信息〜\n");if(continue)search();break;printf(〃请输入查找的学号:");Each("%s");For(i=0;I<n;I++)(If(strcmp(ID,Stu[1])==0)If(xx==0)Printf 、イ)；Printf("学院班级学号姓名数学英语语文总分平均分、n");Xx++;)Printf("%s%%%%.21f6sin5S.21f.21f.2If%%%%.21f\n",Stu[I][I].Clas.System,Stu,Stu,Stu.Id[I],[I][I].Name.Math,Stu,Stu,Stu.Eng[i],[I.CH]sum[I],Stu,Stu[I]AVE);A++;})If(A==0)Printf("无相关信息〜\n");If(continue)Search();Break;INT(continue)[Inta;Printf("是否继续操作?(1/0::是否)'n");Printf("请输入:")；Each("%d",&a);Returnto;)Voidcheck()/Z修改(System("CLS");Charrev[20];Intnum;Inta=0;Intb;IntC;Inti;Printf（"欢迎来到修改信息模块 ヽn"）;Printf（"1.按姓名查\n"）;Printf（"2.按学号查\n"）;Printf（"请输入:"）；Each（"%d"&num）;Switch（num）{Case1:Printf（〃请输入查找的姓名:“）；Each（"%s",Rev）;For（i=0;I<n;I++）If（strcmp（Rev,Stu[1].Name）==0）Printf（"查找成功!\n\n"）;Printf（〃 ヽn"）；Printf（“学院班级学号姓名数学英语语文总分平均分、n"）;Printf（"%s%%%%.21f6sin5S.21f.21f.2If%%%%.21f\n",Stu[I][I].Clas.System,Stu,Stu,Stu.Id[I],[I][I].Name.Math,Stu,Stu,Stu.Eng[i],[I.CH]sum[I],Stu,Stu[I]AVE）;Printf（〃 ヽn"）；A++;C=I;Break;If(A==0)Printf（"无相关信息~\n"）;Else[Printf（"1.学院2.班级3.学号4.姓名5.数学成绩6.英语成绩7.语文成绩\n"）;Printf（"请输入你要修改的信息:"）;Each（"%d",&b）;（b）SwitchPrintf（"请输入修改的学院:"）;Each("%s",Stu[c].System);Printf("修改成功!'n\n");Break;Printf（"请输入修改的班级:つ;Each（'%s”,Stu[c].Clas）;Printf（"修改成功!'n\n"）;Break;Printf（"请输入修改的学号:"）;Each（"%s",Stu[c].Id）;Printf（"修改成功!'n\n"）;Break;Printf（"请输入修改的姓名:"）;Each（"%s",Stu[c].Name）;Printf（"修改成功!'n'n"）;Break;Printf("请输入修改的数学成绩:“)；Each("%If”,&STU[c].Math);Printf("修改成功!'n\n");STU[c]sum=SUM(c);STU[c].大道(c)；打破;案例6：printf(“请输入修改的英语成绩:"以scanf(“％LF”,与研究[C],ENG)；printf("修改成功!"n"；求和[和]和(c)；学生:[C](c)；打破;printf（“请输入修改的语文成绩:"）；scanf（“%LF”,与研究［C］,CH）；printf（"修改成功!"n"；求和［和］和（c）；学生:［C］（c）；打破;}printf（"修改后更新信息:\n"）；printf（" \n"）；printf（"学院班级学号姓名数学英语语文总分平均分、n”）；printf（"%s6s%%%%13s5s。21fo21f%〇21f%〇21f%〇21f\nw,Stu［C］o系统研究［C］。课堂上,学生/］。ID,斯图［C］。名字,Stu［C］o数学［C］,斯图。Eng,斯图［C］。CH,斯图［C］。总和,斯图［C］Ave）；printf\n"）；如果(continue())revise（）；打破;案例2：printf（“请输入查找的学号:"）；scanf（"%s”，REV）；为（i=0；iく；；+（+））i如果（strcmp（启,斯图［我］。ID）==0）!printf（"査找成功!'n"）；printf（“ 'n"）；printf（“学院班级学号姓名数学英语语文总分平均分、n”）；printf(“如6s%%%%13s5s。21fo21f%〇21f%〇21f%o21f\n”,斯图［我］,［我］系统,学生。课堂上,学生［我］,［我］身份证、学生姓名、学生数学［我］。［我］,斯图。Eng,斯图［我］。CH,斯图［我］,和［我］,斯图大街）；printf（“ ゝガ，）；++;c-i；打破;））如果（a=0）printf（"无相关信息〜、n"）；其他的printf（"1。学院2。班级3。学号4。姓名5。数学成绩6。英语成绩7。语文成绩ゝn”）；printf（“请输入你要修改的信息；"）;scanf(“%d”,和B)；开关(b)(案例1：printf(“请输入修改的学院:“);scanf("%s”,Stu[C]〇系统);printf("修改成功!“n”；打破;案例2：printf(“请输入修改的班级:");scanf("%s”,Stu[C]〇分)；printf("修改成功!“n”；打破;案例3：printf(“请输入修改的学号;”);printf（"修改成功!“n”；打破;案例4：printf（“请输入修改的姓名:"）；scanf（"%s”,Stu[C]〇名称）;printf（"修改成功!“n”；打破;案例5：printf（“请输入修改的数学成绩:"）；scanf（"%LF”,与斯图[C]。数学）；printf（“修改成功!“n”；打破；案例6：printf（“请输入修改的英语成绩:"）；scanf（銀LF”,与研究[C],ENG）；printf("修改成功!“n”；打破;Case7:Printf("pleaseinputtherevisedChineseachievement:");Scanf("%lf",&Stu[c].Ch);Printf(modifysuccess,\n\n);Break;)Printf(modifiedupdateinformation:\n\n);Printfド \n");Printf(collegeclassnumber,name,mathematics,English,Chinese,averagescore\n);Printf("%s%6s%13s%5s%.21f%.21f%.21f%.21f\n"),Stu[c].system,Stu[c].clas,Stu[c].id,Stu[c].name,Stu[c].math,Stu[c].Eng,Stu[c].Ch,Stu[c].sum,%.21f,Stu[c].ave);If(Continue())Revise();Break;)}Void(Print)//displayiInti;Printf(〃 \n")；English,Printf(collegeclassnumber,name,mathematics,Chinese,averagescore\n);English,For(i=0;i<n;i++)Printf(，，%s%6s%13s%5s%.21f%.21f%.21f%.21f\n，z),Stu[i].system,Stu[i].clas,Stu[i].id,Stu[i].name,Stu[i].math,Stu[i].Eng,Stu[i].Ch,Stu[i].sum,%.21f,Stu[i].ave);)Printf(〃 'n");)Void(Analysis)//analysisISystem("CLS");Intkey;Inti;CharAna[16];Doublem_ave=0,E_ave=0,C_ave=0;Doublea=0;Doublepass=0;Doubleexcellent=O;Doublepass1=0;Doubleexcellentl=0;Doublepass2=0;Doubleexcellent2=0;Printf("-welcometotheanalysismoduleof 'n");Printf("1.bycollegeanalysis\n");Printf("2.classanalysis'n");Printf("input:");Scanf("%d",&key);Switch(key)IPrintf("entercollege:");Scanf("%s",Ana);For(i=0;i<n;i++)If(StrCmp(Ana,Stu[i].system)==0)Mave+=StuLi].math;E_ave+=Stu[i].Eng;C_ave+=StuLi].Ch;If(Stu[i].math>60)Pass++;If(StuLi].math>90)Excellent++;If(StuLi].Eng>60)Passl++;If(StuLi].Eng>90)Excellentl++;If(StuLi].Ch>90)Excellent2++;A++;))M_ave=m_ave/a;E_ave=E_ave/a;C_ave=C_ave/a;Pass=pass/a;Passl=passl/a;Pass2=pass2/a;Excel1ent=exce11ent/a;Excellentl=excellent1/a;ExcelIent2=excellent2/a;Printf:"Collegerstotalnumberofpatients:%1,theaveragemathscore:%.21fpassrate:%.2If%%excellentrate:%.2If%%\n”,Ana,N,mave,pass*100,excellent*100);Printf("Englishaveragescore:%.21fpassrate:%.2If%%excellentrate:%.2If%%\n",Eave,passl*100,excellentl*100);Printf(theaveragescoreofChineseMedicalCollege:%.21fpassrate:%.2If%%excellentrate:%.21f%%\n),Cave,pass2*100,excellent2*100);PrintfIf(Continue())Analysis();Break;Printf("inputclass:");Scanf("%s,Ana);For(i=0;i<n;i++)If(StrCmp(Ana,Stu[i].clas)==0)IM_ave+=Stu[i].math;E_ave+=Stu[i].Eng;C_ave+=Stu[i].Ch;If(StuLi].math>60)Pass++;If(Stu[i].math>90)Excellent++;If(Stu[i].Eng>60)Passl++;If(StuLi].Eng>90)Excellentl++;If(StuLi].Ch>90)Excellent2++;A++;))M_ave=m_ave/a;E_ave=E_ave/a;C_ave=C_ave/a;Pass=pass/a;Passl=passl/a;Pass2=pass2/a;Excel1ent=exce11ent/a;Excellentl=excellent1/a;Excellent2=excellent2/a;Printf \n");Printf:"Collegerstotalnumberofpatients:%d,theaveragemathscore:%.21fpassrate:%.2If%%excellentrate:%.2If%%\n”,Ana,N,mave,pass*100,excellent*100);Printf("Englishaveragescore:%.21fpassrate:%.2If%%excellentrate:%.2If%%\n",Eave,passl*100,excellentl*100);Printf(theaveragescoreofChineseMedicalCollege:%.21fpassrate:%.2If%%excellentrate:%.21f%%\n),Cave,pass2*100,excellent2*100);PrintfIf(Continue())Analysis();Break;Void(Analysis2)/subjectanalysisSystem("CLS");Doublemax=0,min=101;CharAna[16];Intkey;Inti;Doubleaves=0;Printf("-welcometothesubjectanalysismodule 'n");Printf("1.mathematicalanalysis\n");Printf(2.Englishanalysis\n);Printf(3.languageanalysis\n);Printf("input:");Scanf("%d",&key);Switch(key)Case1:For(i=0;i<n;i++)(Aves+=Stu[i].math;If(max<Stu[i].math)Max=Stu[i].math;If(min>Stu[i