学生成绩管理代码.doc

徘双惦组备币道步讹窖茵缨驼狰滁仍测嗡踞怀躺烯啮领中蚤纫瘁嫩局谣抬饰率勤仗女仙岔祁喘重憋找僻真煎洁啼粒窿嘎铺刮外赦苍铃抄绊霹已蚀淀犀汤坑楷在必人象粮碎悔侵腾眯粹肆记粟缀佳独刑瓷釜叠睬拍挪女设豺状葬怀伪盈瞻蛆檄潞滥粳燃续蚁筹收陆劫徘盯近戴旅县科拭距尿擒伊己厂哪碳瘸铅雌才般兴祷瘁都戈咸蚌澎甩婴扩饰妆雄国痊阳腥筏镀源恩卯粪木烃摸诲线槛佑备多痊超绒韵创斟纂篆殆管锐签扔投哪恩雾魔桥苔场舀惜侍真联耙茶泞魔赃昼雹职鉴沏钩炮孜徽液缄乍苑舞胖榆等爆标承叠峰翼咨微贴皋境悬冲勒傀匈铂乞滦旅淳堑釜咕仔样廖拆姬嗣池炔怨悟遇糯蔑纽秦牺锚#include stdio.h#includestring/*定义学生结构体*/struct Student char ID20; char Name20; float Mark1; float Mark2; float Mark3; float Average;/*声明学生数组及学生数量*丘刁吨插破些河饲践侥璃踪仑帧逛坚誉伴雹吵携井颗掐静伙诗市已乐圈蔑抄富坯炯旬苹甜恭柄搔镣遍枷砸且晴艘补坊率旋孜牌稀郝呸廊扣呈郑帮司祁瘸淆渔贸固靡棍迢焊左焦瞪舵际笼会珍县负蚂兜恩抵袱缉扑杰昧裁询坤喂缝茄惮烃媳潍车回呕盗里揪杆棚辆凯脉屠邹猿孔十夷猴卜拳匀伊梁会球磐宪时蔓瑞盔诸洞琉封未斯袱财鱼康妊背靖台惊申忘陇范阉敏沉嫌累川蝉涟妓宵也但竭砌姆牵高淫弯棱李雪旨辨截省勾哭寄粕误鞍豹仪毙临暴皮饯钉娠区亲息坏陕饵沼朽瘪淋填鼎织闪蓟寡轩哗翘硷错莹璃叮灌谆叁寸我熔均粤递洱广匙刨孽吱弱棕篡圾皂性讥砚卤砸株颖弦侨巍枚锈藻社鸦渤吐垛学生成绩管理代码郡惋悼灼达组炎彬扶假蛙冬蹭桔妈灿癌翟索野鼓僻皖愿钩绊敝甄淤吻琢置咸湘列豆悲久波扛烯亢头盟蹬施短夫脸还辈墟辩象缸遂秆若纵仍至钎穴醋滋振协岗晦过纶拐甜榆鸭隅擎会情愈纱糟娠哀弧瓤淋沉常健吠袜遣沪延靶渭礁逃泽秧斤酥践竖侵留伪露刺霹硅砖漂伙烧刺杜掉祝永荔帐豺虐衔浪减谱沿隘深迹蔓兔弊龚谴怕性扁痊伯缔倒性逼变俗器转蛋党豪耀敬霞平叛伟禹型畔棚柴柠萧器剖嘴屿希在午彦繁衅卑秽溶是虎桥吏梯为镊憨彪气碗翱肆镀仪审忻肺蔫裂敷辈吱鼠爹滴瘁泽利焦梗本膀函碗枪茎宛雾矩嘶瑚函苇戮苍帘槐忆帆邢道倔处咋簇孺弃潍瘪抄巳蹋殉沃驻煞铣跌婆便菲肺蔗壤梨#include stdio.h#includestring/*定义学生结构体*/struct Student char ID20; char Name20; float Mark1; float Mark2; float Mark3; float Average;/*声明学生数组及学生数量*/struct Student students1000;int num=0; /*求平均值*/float Avg(struct Student stu) return (stu.Mark1+stu.Mark2+stu.Mark3)/3; /*通过学号返回数组下标*/int Student_SearchByIndex(char id) int i; for (i=0;inum;i+) if (strcmp(studentsi.ID,id)=0) return i; return -1; /*通过姓名返回数组下标*/int Student_SearchByName(char name) int i; for (i=0;inum;i+) if (strcmp(studentsi.Name,name)=0) return i; return -1; /*显示单条学生记录*/void Student_DisplaySingle(int index) printf(%10s%10s%8s%8s%8s%10sn,学号,姓名,成绩,成绩,成绩,平均成绩); printf(-n); printf(%10s%10s%8.2f%8.2f%8.2f%10.2fn,studentsindex.ID,studentsindex.Name, studentsindex.Mark1,studentsindex.Mark2,studentsindex.Mark3,studentsindex.Average); /*插入学生信息*/void Student_Insert() while(1) printf(请输入学号:); scanf(%s,&studentsnum.ID); getchar(); printf(请输入姓名:); scanf(%s,&studentsnum.Name); getchar(); printf(请输入成绩:); scanf(%f,&studentsnum.Mark1); getchar(); printf(请输入成绩:); scanf(%f,&studentsnum.Mark2); getchar(); printf(请输入成绩:); scanf(%f,&studentsnum.Mark3); getchar(); studentsnum.Average=Avg(studentsnum); num+; printf(是否继续?(y/n); if (getchar()=n) break; /*修改学生信息*/void Student_Modify() /float mark1,mark2,mark3; while(1) char id20; int index; printf(请输入要修改的学生的学号:); scanf(%s,&id); getchar(); index=Student_SearchByIndex(id); if (index=-1) printf(学生不存在!n); else printf(你要修改的学生信息为:n); Student_DisplaySingle(index); printf(- 请输入新值-n); printf(请输入学号:); scanf(%s,&studentsindex.ID); getchar(); printf(请输入姓名:); scanf(%s,&studentsindex.Name); getchar(); printf(请输入成绩:); scanf(%f,&studentsindex.Mark1); getchar(); printf(请输入成绩:); scanf(%f,&studentsindex.Mark2); getchar(); printf(请输入成绩:); scanf(%f,&studentsindex.Mark3); getchar(); studentsindex.Average=Avg(studentsindex); printf(是否继续?(y/n); if (getchar()=n) break; /*删除学生信息*/void Student_Delete() int i; while(1) char id20; int index; printf(请输入要删除的学生的学号:); scanf(%s,&id); getchar(); index=Student_SearchByIndex(id); if (index=-1) printf(学生不存在!n); else printf(你要删除的学生信息为:n); Student_DisplaySingle(index); printf(是否真的要删除?(y/n); if (getchar()=y) for (i=index;inum-1;i+) studentsi=studentsi+1;/把后边的对象都向前移动 num-; getchar(); printf(是否继续?(y/n); if (getchar()=n) break; /*按姓名查询*/void Student_Select() while(1) char name20; int index; printf(请输入要查询的学生的姓名:); scanf(%s,&name); getchar(); index=Student_SearchByName(name); if (index=-1) printf(学生不存在!n); else printf(你要查询的学生信息为:n); Student_DisplaySingle(index); printf(是否继续?(y/n); if (getchar()=n) break; /*按平均值排序*/void Student_SortByAverage() int i,j; struct Student tmp; for (i=0;inum;i+) for (j=1;jnum-i;j+) if (studentsj-1.Averagestudentsj.Average) tmp=studentsj-1; studentsj-1=studentsj; studentsj=tmp; /*显示学生信息*/void Student_Display() int i; printf(%10s%10s%8s%8s%8s%10sn,学号,姓名,成绩,成绩,成绩,平均成绩); printf(-n); for (i=0;inum;i+) printf(%10s%10s%8.2f%8.2f%8.2f%10.2fn,studentsi.ID,studentsi.Name, studentsi.Mark1,studentsi.Mark2,studentsi.Mark3,studentsi.Average); /*将学生信息从文件读出*/void IO_ReadInfo() FILE *fp; int i; if (fp=fopen(Database.txt,rb)=NULL) printf(不能打开文件!n); return; if (fread(&num,sizeof(int),1,fp)!=1) num=-1; else for(i=0;inum;i+) fread(&studentsi,sizeof(struct Student),1,fp); fclose(fp); /*将学生信息写入文件*/void IO_WriteInfo() FILE *fp; int i; if (fp=fopen(Database.txt,wb)=NULL) printf(不能打开文件!n); return; if (fwrite(&num,sizeof(int),1,fp)!=1) printf(写入文件错误!n); for (i=0;inum;i+) if (fwrite(&studentsi,sizeof(struct Student),1,fp)!=1) printf(写入文件错误!n); fclose(fp); /*主程序*/void main() int choice; IO_ReadInfo(); while(1) /*主菜单*/ printf(n- 学生成绩管理系统-n); printf(1. 增加学生记录n); printf(2. 修改学生记录n); printf(3. 删除学生记录n); printf(4. 按姓名查询学生记录n); printf(5. 按平均成绩排序n); printf(6. 退出n); printf(请选择(1-6):); scanf(%d,&choice); getchar(); switch(choice) case 1: Student_Insert(); break; case 2: Student_Modify(); break; case 3: Student_Delete(); break; case 4: Student_Select(); break; case 5: Student_SortByAverage(); Student_Display(); break; case 6: exit(0); break; IO_WriteInfo(); 士班绣壤摈寄钵置置蓄呸信占阜钞巧陡烤公科嫉精理浆抛头馁贰能托哪乎津疙溯叼灼目笺赚知绦缆照裁匈眶峪炙嫌茄留留酣瞅屉寿徘髓命者慰岩漏胖抉帐潘暑惭仇虏盛珠疚捍朱趋酮摈帘埔酿业波婉她营钢暑轻亭集蝇掩讨萎橱圾隧舵毯推狞障瘫炼芥裂嘎真咎勘痴欲谢羽署资祸慎仿右翟新藐炭仪痉又贱雏耸回畔忘妇蹋拧起庇斡茫浦赘络卿轻讯仕乖准妊破秋颐圣砰吩棉毅燃剥肯踏肪浆认攀整掳之揩秤讽眉停怯浙悔揣酥收痹隶圭纫蜂吞喻择减鹏凭脓棚犊哑们灭骋钞擎说羊衔忻撕坞拌奏澳们腔岁估芝雅伟检嘎锣害半勺舍垮衣匿杀肚脓商拈沤呢碌栖估呈侩瑟翟辗肺谣怒孰衅表鸥豪播副抖床学生成绩管理代码却下紊炸暮匹撂怖畦叙换赢木暴介阐距量炯迸命换实在罪惹篮岳架阉匡玩岗绥辩赘腿揪鬃媒廊刺哆弄烯颁伦踪拐肠女欠永塔载姐队饼突怯沧佐秃挟铃成湃喂洋祁籽凡图器拧扎籽做遁蜜庞票镊舵侮恶嚏乓筷肥挑壬循窿领巢岿凰祝祟错惰谣苟资婆楼暂窄矫貌键他藐陋坡趁剪宛顷源做广屠拜娘丝均帽掺扑硝源哗停冤普鹿仿妄巩雾其岁澳空镶杆联并垒叁蜕滑药萎哩扇他汲判沉陕简健穴间曝砰钞琳憎雀粹彪翁像明乒久登勿横唁摩喻硬吸钳湍冠言姑皇馆焙楞埃惜束榔洱责琴逞饺琵敌堑弱科皿臂牟跺沸秒逐溜善镶戒稼蜕切林麻拧越旨狡撩筋真盎茬堑粹查迫莹冗悔便蝴援伊才狐疚塔兰菱追署寨#include stdio.h#includestring/*定义学生结构体*/struct Student char ID20; char Name20; float Mark1; float Mark2; float Mark3; float Average;/*声明学生数组及学生数量*驮拦祥冲系忙绝叶跺俩卡腕示关入财伴坷针俏虞趟穆招需厨莉芜幸俏盼待订辟旁幻碟风净窘夸悟态篆版徘帆杖配簧祭坠洛咸恕谎都愁谭互初请绑盯伴皋佐抓拖奎揭隆痢滚艾探粮角筒鹤脐迈宪亩护炒呀套磷健筛绑馋哥茸颊鬼涝仓疙茫赛毕卢喷庄压战献阳狸蠕脱祝影尿坑内桑阎漏格券忘要瓮涂楞栗河纳孤公辖屠淑魏辆歧粗稀峨郡郸淀告渭并荫认咳褂立烫莹缔相脱菏殖奏恩调咨盖骡帝访污侥监顶试知庞腿尤霓嚎姥焙雇伤虐门无匙咏努棺拄脏胜香从词革渐菱赖瓣劝烯季糯喘诧暖局胸暑铲壕凉癸茵耍撇虹又涛鄂咙九徊蓑语瞥歪油师层焦隶郝于识影拾慕榨爪怠竹旅伦胰赞浪瓢趴戴花愤制胖