简易水电费管理系统源程序代码法一：#include<stdio.h>#include<string.h>#include<stdlib.h>struct member{char no[100];char name[20];char password[20];float wfee;float efee;}memb;void newadd(int n){ int t,i;fseek(fp,0,SEEK_END);printf(">>新添人数：");scanf("%d",&t);for(i=0;i<t;i++){ printf("新添第%d个成员：");scanf("%s %s %s %f %f",memb.no,,memb.password,memb.wfee,memb.efee); fwrite(&memb,sizeof(struct member),1,fp);}}void look(int n){ char a[100];printf(">>输入卡号：");scanf("%s",a);int i=0;rewind(fp);while(1){ fread(&memb,sizeof(struct member),1,fp);if(feof(fp)||memb.no==a) break;i++;}if(!feof(fp)){ printf(">>卡号：");printf("%s\n",memb.no);printf(">>姓名：");printf("%s\n",");printf(">>水费：");printf("%f\n",memb.wfee);printf(">>电费：");printf("%f\n",memb.efee);}elseprintf(">>查无此人\n");};void delete(int n){ char c[100];printf(">>删除的卡号:");scanf("%s," c);if((fp1=fopen("temp.bin","wb"))==NULL){printf(">>不能建立临时文件，无法删除\n");}rewind(fp);while(1){ fread(&memb,sizeof(struct member),1,fp);if(feof(fp)) break;if(memb.no!=c)fwrite(&memb,sizeof(struct member),1,fp1);}fclose(fp1);fclose(fp);remove("member.bin");rename("temp.bin","member.bin");fp=fopen("member.bin","rb++");};main(){ char a[100]; char b[20];FILE *fp;printf("欢迎进入水电费管理系统\n")int i=0,sel=1;if((fp=fopen("member.bin","wb++"))==NULL){ printf(">>不能建立member.bin文件\n");return(0);}while(sel!=0){ printf("| 1 | 2 | 3 | 4 |\n"); printf("| ------------------------------------------------------------ |\n"); printf("|新添成员|查找个人信息|删除成员|退出|\n); fseek(fp,0,SEEK_END);scanf("%d",&sel);switch(sel){ case 1:newadd(sel); break;clscr(); exit(0);case 2:printf("请输入您的卡号：");printf("%s",a);printf("请输入您的密码：");puts(b);while(strcmp(a,memb.no)==0&&strcmp(b,memb.password)==0)look(sel);printf("您的输入有误\n"); break;clscr();exit(0);case 3:delete(sel); break;clscr();exit(0);}法二：#include<stdio.h>#include<string.h>#include<stdlib.h>#include<windows.h>#include<conio.h>struct member{char no[100];char name[20];char password[20];float wfee;float efee;}memb;void newadd(int n){ int t,i;FILE *fp;fp=fopen("e:\\member.bin","a");fseek(fp,0,SEEK_END);printf(">>新添人数：");scanf("%d",&t);for(i=0;i<t;i++){ printf("新添第%d个成员：",i+1);scanf("%s %s %s %f %f",memb.no,,memb.password,&memb.wfee,&memb.efee); fwrite(&memb,sizeof(struct member),1,fp);}fclose(fp);}void look(int n){ char a[100],b[20]; FILE *fp;int i;fp=fopen("e:\\member.bin","rb");if(fp==NULL) printf("****");printf(">>输入卡号：");scanf("%s",a);i=0;rewind(fp);while(1){ fread(&memb,sizeof(struct member),1,fp);if(feof(fp)||strcmp(memb.no,a)==0) break;i++;}if(!feof(fp)){ printf(">>卡号：");printf("%s\n",memb.no);printf(">>姓名：");printf("%s\n",);printf(">>水费：");printf("%f\n",memb.wfee);printf(">>电费：");printf("%f\n",memb.efee);}elseprintf(">>查无此人\n");getch();fclose(fp);}void dele(int n){ char c[100];FILE *fp,*fp1;fp=fopen("e:\\member.bin","rb");printf(">>删除的卡号:");scanf("%s" ,c);if((fp1=fopen("temp.bin","wb"))==NULL){printf(">>不能建立临时文件，无法删除\n");}rewind(fp);while(1){ fread(&memb,sizeof(struct member),1,fp);if(feof(fp)) break;if(strcmp(memb.no,c)!=0)fwrite(&memb,sizeof(struct member),1,fp1);} fclose(fp1);fclose(fp);remove("member.bin");rename("temp.bin","member.bin");fp=fopen("member.bin","rb+");}main(){ char a[100]; char b[20];int i=0,sel=1;FILE *fp;printf("欢迎进入水电费管理系统\n");if((fp=fopen("e:\\member.bin","wb"))==NULL){ printf(">>不能建立member.bin文件\n");return(0);}while(sel!=0){ printf("| 1 | 2 | 3 | 4 |\n"); printf("| ------------------------------------------------------------ |\n"); printf("|新添成员|查找个人信息|删除成员|退出|\n"); fseek(fp,0,SEEK_END);scanf("%d",&sel);printf("sel=%d\n",sel);switch(sel){ case 1:newadd(sel);system("cls"); break;case 2:look(sel);system("cls"); break;case 3:dele(sel);system("cls");break;}}}。