用c语言开发小型数据库管理系统代码

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1、#include#includetypedefstructcount{/*±£´æ¼Ç¼ÌõÊý½á¹¹Ìå*/charname[10];intnum;}count;typedefstructst{charname[10];longNumber;intMath;intC;intAmount;}st;strecord[8];countnum[1];charfilename[10]={"0"};charfilename2[10]={"0"};intInputnum[8];voidMainM

2、enu(){/*Ö÷²Ëµ¥*/printf("tttt**********");printf("tttt*Ö÷²Ëµ¥*");printf("tttt*1.´´½¨ÐÂÎļþ*");printf("tttt*2.Ìí¼Ó¼Ç¼*");printf("tttt*3.ɾ³ý¼Ç¼*");printf("tttt*4.ÅÅÐò*");printf("tttt*5.²éѯ¼Ç¼*");printf("tttt*6.Í˳ö*

3、");printf("tttt**********");}voidDelMenu(){/*ɾ³ý²Ëµ¥*/printf("tttt************");printf("tttt*ɾ³ý²Ëµ¥*");printf("tttt*1.ѧºÅ²éѯɾ³ý*");printf("tttt*2.·µ»Øµ½Éϼ¶²Ëµ¥*");printf("tttt************");}voidRankingMenu(){/*ÅÅÐò²Ë

4、µ¥*/printf("tttt************");printf("tttt*ÅÅÐò²Ëµ¥*");printf("tttt*1.Êýѧ³É¼¨ÅÅÐò*");printf("tttt*2.CÓïÑԳɼ¨ÅÅÐò*");printf("tttt*3.×Ü·ÖÅÅÐò*");printf("tttt*4.·µ»Øµ½Éϼ¶²Ëµ¥*");printf("tttt************");}voidInquireMen

5、u(){/*²éѶ²Ëµ¥*/printf("tttt************");printf("tttt*²éѶ²Ëµ¥*");printf("tttt*1.ѧºÅ²éѶ*");printf("tttt*2.ÐÕÃû²éѶ*");printf("tttt*3.Êýѧ³É¼¨²éѶ*");printf("tttt*4.CÓïÑԳɼ¨²éѶ*");printf("tttt*5.×Ü·Ö²éѶ*");printf("

6、tttt*6.·µ»Øµ½Éϼ¶²Ëµ¥*");printf("tttt************");}charInputfilename(){/*ÊäÈëÎļþÃûͬʱ²úÉú¸¶±¾ÎļþÃû*/charstr2[]={"B"};printf("**ÇëÊäÈëÎļþÃû**:");scanf("%s",filename);getchar();strcpy(filename2,filename);strcat(filename2,str2);}FILE*readfile(){/*¶ÁÈ¡

7、Îĵµ*/FILE*fp1;if((fp1=fopen(filename,"rb"))==NULL){printf("Îļþ¶ÁÈ¡´íÎó!!");fclose(fp1);}return(fp1);}FILE*foundfile(){/*н¨Îĵµ*/FILE*fp1;if((fp1=fopen(filename,"wb"))==NULL){printf("Îļþ´´½¨´íÎó!!");fclose(fp1);}return(fp1);}FILE*savefile(){/*×·¼ÓÎĵµ*/

8、FILE*fp1;if((fp1=fopen(filename,"ab"))==NULL){printf("Îļþ×·¼Ó´íÎó!!");fclose(fp1);}return(fp1);}intInputSave(){/*Ìí¼ÓÊý¾Ý*/inti=0,j;charch='