C語言專業(yè)課程設計學生成績標準管理系統(tǒng)完整版

#include<stdio.h>#include<stdlib.h>#include<io.h>#include<string.h>/*strcmp函數(shù)原型包含*/ #defineN100/*定義最大學生人數(shù)為100*/structstudent/*學生結(jié)構(gòu)體定義*/{charno[11];/*學號,10位*/charname[10];/*姓名，3個漢字*/chargrade[10];/*班級*/charpro[20];/*專業(yè)*/floatscore[5];/*儲存5門功課成績*/floatave;/*儲存平均分*/intyear;/*入年*/}stu[N];intnum;voidpanduani(int);/*經(jīng)過i值，判定信息要查找信息是否存在*/voidoutput();/*輸出學生成績函數(shù)（公共函數(shù)）*/voidinit();/*系統(tǒng)初始化函數(shù)*/voidnewfile();/*建立新數(shù)據(jù)文件*/voidread1();/*從數(shù)據(jù)文件中讀取數(shù)據(jù)*/voidweihu();/*維護界面函數(shù)*/voidnew1();/*新增一個學生成績函數(shù)*/voidxiugai();/*修改學生成績*/voidxgcj(int);/*修改成績*/voiddelete1();/*刪除學生信息函數(shù)*/voidtongji();/*統(tǒng)計界面函數(shù)*/voidtongji1();/*計算每個學生平均分*/voidtongji2();/*計算每門課程平均分*/voidpaixu1();/*排序函數(shù)*/voidpaino();/*按學號排序*/voidpaiave();/*按平均分排序*/voidpaidkcj();/*按單科成績排序*/voidchange(int,int);/*交換結(jié)構(gòu)體數(shù)組中兩個統(tǒng)計*/voidoutputx(int);/*選擇輸出單科成績*/voidfind1();/*查找界面函數(shù)*/intfind(charsno[]);/*按學號查找*/intfindname(charcname[]);/*按姓名查找*/voidfindyear(intcyear);/*按入年查找*/voidsave();/*保留文件*/voidstop();/*停頓函數(shù)*/voidstop()/*停頓函數(shù)（公共函數(shù)）*/{printf("PressAnyKeyToContinue...\n");getchar();}voidoutput()/*輸出學生成績函數(shù)（公共函數(shù)）*/{inti,j;printf("===================================================================\n");printf("學號姓名班級專業(yè)入年C語言高數(shù)大物電路模電\n");printf("===================================================================\n");for(i=0;i<num;i++){printf("%s%s%s%s%d",stu[i].no,stu[i].name,stu[i].grade,stu[i].pro,stu[i].year);for(j=0;j<5;j++)printf("%.1f",stu[i].score[j]);printf("\n");}stop();}voidinit()/*系統(tǒng)初始化函數(shù)*/{if(access("stu.dat",0))/*判定文件是否存在*/newfile();/*若不存在，新建數(shù)據(jù)文件*/elseread1();/*若存在，讀取數(shù)據(jù)*/}voidnewfile()/*建立新數(shù)據(jù)文件*/{inti;FILE*fp;if((fp=fopen("stu.dat","wb"))==NULL)/*創(chuàng)建二進制文件*/{printf("創(chuàng)建文件失敗，請重新運行程序.\n");/*顯示"創(chuàng)建文件失敗，請重新運行程序"*/exit(0);/*終止程序*/}printf("首次運行，進行數(shù)據(jù)初始化...\n");/*顯示"首次運行，進行數(shù)據(jù)初始化..."*/stop();printf("請輸入學生人數(shù)：");/*顯示"請輸入學生人數(shù)："*/scanf("%d",&num);for(i=0;i<num;i++){printf("請輸入第%d個學生學號:",i+1);/*顯示"請輸入第i+1個學生學號:"*/getchar();/*吃回車*/gets(stu[i].no);printf("姓名:");/*顯示"姓名:"*/gets(stu[i].name);printf("班級:");/*顯示"班級:"*/gets(stu[i].grade);printf("專業(yè):");/*顯示"專業(yè):"*/gets(stu[i].pro);printf("入年n:");/*顯示"入年"*/scanf("%d",&stu[i].year);printf("C語言成績:");/*顯示"C語言成績"*/scanf("%f",&stu[i].score[0]);printf("高數(shù)成績:");/*顯示"高數(shù)成績"*/scanf("%f",&stu[i].score[1]);printf("大物成績:");/*顯示"大物成績"*/scanf("%f",&stu[i].score[2]);printf("電路成績:");/*顯示"電路成績"*/scanf("%f",&stu[i].score[3]);printf("模電成績:");/*顯示"模電成績"*/scanf("%f",&stu[i].score[4]);fwrite(&stu[i],1,sizeof(structstudent),fp);/*把第i+1名學生成績寫入文件*/}fclose(fp);printf("========================\n");printf("剛才輸入%d個數(shù)據(jù)為：\n",num);/*顯示"剛才輸入num個數(shù)據(jù)為："*/printf("========================\n\n");output();}voidread1()/*從數(shù)據(jù)文件中讀取數(shù)據(jù)*/{FILE*fp;num=0;/*num為數(shù)據(jù)文件中實際存放學生人數(shù)*/fp=fopen("stu.dat","r");if(fp==NULL)/*數(shù)據(jù)文件不存在*/{printf("文件打開失敗！重新運行程序\n");/*顯示"文件打開失敗！重新運行程序"*/exit(0);}while(!feof(fp))/*文件結(jié)束檢測"*/{fread(&stu[num],1,sizeof(structstudent),fp);num++;}num--;fclose(fp);printf("\t\t\t=======================================\n");printf("\t\t\t現(xiàn)有%d個學生成績：\n",num);/*顯示"現(xiàn)有NUM個學生成績："*/printf("\t\t\t=======================================\n\n");output();}voidweihu()/*維護界面函數(shù)*/{charc1;while(1){printf("\n\n\n\t\t\t************************\n");printf("\t\t\t*維護*\n");printf("\t\t\t*1.新增*\n");/*新增*/printf("\t\t\t*2.刪除*\n");/*刪除（按學號）*/printf("\t\t\t*3.修改*\n");/*修改*/printf("\t\t\t*9.返回*\n");/*返回*/printf("\t\t\t************************\n");printf("\t\t\t請選擇：\n");/*請選擇：*/c1=getchar();getchar();if(c1=='9')break;switch(c1){case'1':new1();break;case'2':delete1();case'3':xiugai();break;default:printf("選擇有誤，請重選！\n");/*"選擇有誤，請重選！"*/}}}voidnew1()/*新增一個學生成績函數(shù)*/{printf("請輸入學號:");/*顯示"請輸入學號:"*/gets(stu[num].no);printf("姓名:");/*顯示"姓名:"*/gets(stu[num].name);printf("班級:");/*顯示"班級:"*/gets(stu[num].grade);printf("專業(yè):");/*顯示"專業(yè):"*/gets(stu[num].pro);printf("入年:");/*顯示"入年"*/scanf("%d",&stu[num].year);printf("C語言成績:");/*顯示"C語言成績"*/scanf("%f",&stu[num].score[0]);printf("高數(shù)成績:");/*顯示"高數(shù)成績"*/scanf("%f",&stu[num].score[1]);printf("大物成績:");/*顯示"大物成績"*/scanf("%f",&stu[num].score[2]);printf("電路成績:");/*顯示"電路成績"*/scanf("%f",&stu[num].score[3]);printf("模電成績:");/*顯示"模電成績"*/scanf("%f",&stu[num].score[4]);num++;printf("\n======================================\n");printf("現(xiàn)有%d個學生成績:\n",num);/*顯示"現(xiàn)有NUM個學生成績："*/printf("======================================\n\n");output();}voidxiugai()/*修改學生成績*/{charxg[11];inti;printf("\n請輸入要修改學生學號:\n\n");gets(xg);for(i=0;i<num;i++)if(strcmp(stu[i].no,xg)==0)break;if(i==num){printf("\n數(shù)據(jù)文件無該生信息!\n\n請重新輸入學號.\n\n");stop();return;}xgcj(i);}voidxgcj(intx)/*修改成績*/{charxueke[5][10]={"C語言","高數(shù)","物理","電路","模電"};char(*p)[10],c;intj,k;p=xueke;for(;;){printf("\n");printf("\t\t\t************************************\n\n");printf("\t\t\t成績\n");printf("\t\t\t1.C語言\n");/*C語言*/printf("\t\t\t2.高數(shù)\n");/*高數(shù)*/printf("\t\t\t3.物理\n");/*大學物理*/printf("\t\t\t4.電路\n");/*電路*/printf("\t\t\t5.模電\n");/*模電*/printf("\t\t\t9.返回\n\n");/*返回上級*/printf("\t\t\t************************************\n\n");printf("\t請選擇要修改成績(按.5.9):\n");c=getchar();getchar();if(c=='9')break;elseif(c>='1'&&c<='5'){k=c-49;printf("\n請輸入%s成績:\n",p+k);scanf("%f",&stu[x].score[k]);printf("\n修息為:\n");printf("學號姓名班級專業(yè)入年C語言高數(shù)大物電路模電\n");printf("===================================================================\n");printf("%s%s%s%s%d",stu[x].no,stu[x].name,stu[x].grade,stu[x].pro,stu[x].year);for(j=0;j<5;j++)printf("%.1f",stu[x].score[j]);printf("\n");}elseprintf("\n選擇有誤，請重選!\n\n");stop();}}intfind(charsno[])/*按學號查找*/{inti;for(i=0;i<num;i++)if(strcmp(stu[i].no,sno)==0)/*判定兩個字符串相等*/returni;/*查找成功*/return-1;/*查找失敗*/}voiddelete1()/*刪除學生信息函數(shù)*/{charcno[11];inti,j;printf("請輸入要刪除學生學號:");/*"請輸入要刪除學生學號"*/gets(cno);i=find(cno);if(i!=-1){for(j=i;j<num;j++)stu[j]=stu[j+1];num--;printf("現(xiàn)有%d個學生成績:\n",num);/*顯示"現(xiàn)有NUM個學生成績："*/output();}else{printf("請輸入正確學號.\n");stop();}}voidtongji()/*統(tǒng)計界面函數(shù)*/{inti;charc2;while(1){printf("\n\n\n\t\t\t*******************************\n");printf("\t\t\t*統(tǒng)計*\n");printf("\t\t\t*1.學生平均分*\n");/*計算學生平均分*/printf("\t\t\t*2.課程平均分*\n");/*計算每門課程平均分*/printf("\t\t\t*9.返回*\n");/*返回*/printf("\t\t\t*******************************\n");printf("\t\t\t請選擇:\n");/*請選擇：*/c2=getchar();getchar();if(c2=='9')break;switch(c2){case'1':tongji1();printf("\n\n學生平均分為:\n");printf("===========================================\n");printf("學號姓名入年平均分\n");printf("===========================================\n");for(i=0;i<num;i++)printf("%s%s%d%.2f\n",stu[i].no,stu[i].name,stu[i].year,stu[i].ave);stop();break;case'2':tongji2();break;default:printf("選擇有誤，請重選\n");/*"選擇有誤，請重選！"*/}}}voidtongji1()/*計算每個學生平均分*/{inti,j;for(i=0;i<num;i++){stu[i].ave=0;for(j=0;j<5;j++)stu[i].ave+=stu[i].score[j];stu[i].ave=stu[i].ave/5;}}voidtongji2()/*計算每門課程平均分*/{inti,j;floatsum;floatavec[5];/*儲存每門課平均分*/for(j=0;j<5;j++){sum=0;for(i=0;i<num;i++)sum+=stu[i].score[j];avec[j]=sum/num;}printf("\n\n各科平均分：\n");/*"各科平均分："*/printf("===================================\n");printf("C語言高數(shù)大物電路模電\n");printf("===================================\n");for(i=0;i<5;i++)printf("%-7.1f",avec[i]);printf("\n");stop();}voidpaixu1()/*排序界面*/{charc3;for(;;){printf("\n\n\n");printf("\t\t\t***********************************\n");printf("\t\t\t*排序*\n");printf("\t\t\t*1.按學號排序*\n");/*按學號排序*/printf("\t\t\t*2.按平均分排序*\n");/*按平均分排序*/printf("\t\t\t*3.按單科成績排序*\n");/*按單科成績排序*/printf("\t\t\t*9.返回*\n");/*返回*/printf("\t\t\t***********************************\n\n");printf("\t請選擇：(按):\n");/*請選擇：*/c3=getchar();getchar();if(c3=='9')break;switch(c3){case'1':paino();break;case'2':paiave();break;case'3':paidkcj();break;default:printf("\n選擇有誤，請重選!\n\n");/*選擇有誤，請重選!*/stop();}}}voidpaino()/*按學號排序*/{/*按學號從低到高冒泡法排序*/inti,j;for(i=0;i<num;i++)for(j=0;j<num-1-i;j++)if(strcmp(stu[j].no,stu[j+1].no)>0)change(j,j+1);printf("\n排序后為:\n");/*"排序后為："*/output();}voidpaiave()/*按平均分排序*/{/*按平均分從高到低冒泡法排序*/inti,j;tongji1();/*計算平均成績*/for(i=0;i<num;i++)for(j=0;j<num-i-1;j++)if(stu[j].ave<stu[j+1].ave)change(j,j+1);printf("\n\t排序后為:\n");/*"排序后為："*/printf("\t===============================================\n");printf("\t學號姓名入年平均分排名\n");printf("\t===============================================\n");for(i=0;i<num;i++)printf("\t%s%s%d%.2f%4d\n",stu[i].no,stu[i].name,stu[i].year,stu[i].ave,i+1);stop();}voidpaidkcj()/*按單科成績排序*/{charc;inti,j,k;while(1){printf("\n");printf("\t\t\t************************************\n\n");printf("\t\t\t單科成績\n");printf("\t\t\t1.C語言\n");/*C語言*/printf("\t\t\t2.高數(shù)\n");/*高數(shù)*/printf("\t\t\t3.物理\n");/*大學物理*/printf("\t\t\t4.電路\n");/*電路*/printf("\t\t\t5.模電\n");/*模電*/printf("\t\t\t9.返回\n\n");/*返回上級*/printf("\t\t\t************************************\n\n");printf("\t請選擇：(按.5.9):\n");c=getchar();getchar();if(c=='9')break;elseif(c>='1'&&c<='5'){k=c-49;for(i=0;i<num;i++)for(j=0;j<num-1-i;j++)if(stu[j].score[k]<stu[j+1].score[k])change(j,j+1);outputx(k);}elseprintf("\n選擇有誤，請重選!\n\n");stop();}}voidchange(inti,intj)/*交換結(jié)構(gòu)體數(shù)組中兩個統(tǒng)計*/{structstudenttemp;temp=stu[i];stu[i]=stu[j];stu[j]=temp;}voidoutputx(intk)/*選擇輸出單科成績*/{charxueke[5][10]={"C語言","高數(shù)","物理","電路","模電"};char(*p)[10];/*定義一個指向包含10個字符型元素一維數(shù)組指針變量*/inti;p=xueke;printf("\n\t排序后為:\n");printf("\t===============================================\n");printf("\t學號姓名入年%s排名\n",p+k);printf("\t===============================================\n");for(i=0;i<num;i++)printf("\t%-11s%-10s%-11d%-6.1f%5d\n",stu[i].no,stu[i].name,stu[i].year,stu[i].score[k],i+1);}voidfind1()/*查找界面函數(shù)*/{charc4;charcno[11],cname[10];inti,cyear;while(1){printf("\t\t\t*************************************\n");printf("\t\t\t*查找*\n");printf("\t\t\t*1.按學號查找*\n");/*按學號查找*/printf("\t\t\t*2.按姓名查找*\n");/*按姓名查找*/printf("\t\t\t*3.按入年查找*\n");/*按入年查找*/printf("\t\t\t*9.返回*\n");/*返回*/printf("\t\t\t*************************************\n");printf("\t\t\t請選擇:\n");/*請選擇：*/c4=getchar();getchar();if(c4==57)break;switch(c4){case'1':printf("輸入學號:\n");/*"輸入學號："*/gets(cno);i=find(cno);panduani(i);break;case'2':printf("輸入姓名:\n");/*"輸入姓名："*/gets(cname);i=findname(cname);panduani(i);break;case'3':printf("輸入入年:\n");/*"輸入入年"*/scanf("%d",&cyear);findyear(cyear);stop();break;default:printf("選擇有誤，請重選!\n");/*"選擇有誤，請重選！"*/}}}intfindname(charcname[])/*按姓名查找*/{inti;for(i=0;i<num;i++)if(strcmp(stu[i].name,cname)==0)/*判定兩個字符串相等*/returni;/*查找成功*/return-1;/*查找失敗*/}voidfindyear(intcyear){inti,j,flag=0;for(i=0;i<num;i++)if(stu[i].year==cyear){flag=1;break;}if(flag==0){printf("要查找學生不存在\n");stop();}else{printf("查找到學生信息為:\n");/*"查找到學生信息為："*/printf("學號姓名班級專業(yè)入年C語言高數(shù)大物電路模電\n");printf("===================================================================\n");for(i=0;i<num;i++){if(stu[i].year==cyear)/*判定兩個數(shù)值相等*/{printf("%s%s%s%s%d",stu[i].no,stu[i].name,stu[i].grade,stu[i].pro,stu[i].year);for(j=0;j<5;j++)printf("%.1f",stu[i].score[j]);printf("\n");}}}}voidpanduani(inti)/*經(jīng)過i值，判定信息要查找信息是否存在*/{intj;if(i==-1){printf("要查找學生不存在\n");/*要查找學生不存在*/stop();}else{printf("查找到學生信息為：\n");/*"查找到學生信息為："*/printf("學號姓名班級專業(yè)入年C語言高數(shù)大物電路模電\n");printf("========================