我想在这个程序中实现：将用户信息数据:如用户名，密码，账户金额引入txt文本，并在下一次实现功能时
，从txt中读取相关用户名，密码，金额。挂失数据暂不考虑，请避免用户名，密码，余额，不对应。txt文件名为data.txt
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int AccountCheck(); //用户名验证
int ReportLossVerification(int); //挂失验证
int Code(int); //密码函数
float Total=0; //// 定义全局变量T,记录用户一天取款数的总和
void Withdrawal (); //取款函数
void SaveMoney (); //存款函数
void Inquire(); //查询函数
void SellingHousehodes(); //销户函数
void CreateNewAccount(); //开户函数
void Transfer(); //转账函数
void Loss(); //挂失函数
void Exit(); //退出函数
void CheckAllInfro(); //查询所有用户信息
char UserName[100][30]; //用户名
char CodeStr[100][30]; //密码
char LossName[100][30]; //挂失用户名
float RemainAmount[100]; //存款余额
int UserNumber=0; //用户数
int LossNumber=0; //挂失用户数
void main()
{
int order; //命令
while(order)
{
printf("******************************************************************\n");
printf("|| NM$L BANK ATM SYSTEM ||\n");
printf("|| ||\n");
printf("|| 1.Create new account. 4.Take money out. 8.Report Loss. ||\n");
printf("|| 2.Save money. 5.Delete a current account. ||\n");
printf("|| 3.Check current account. 6.Transfer money. 0.Exit. ||\n");
printf("|| 7.Give all user information. ||\n");
printf("|| ||\n");
printf(" ================================================================ \n");
printf("Give your orders please: ");
scanf("%d",&order);
printf("\n");
switch(order)
{
case 1: //开户
CreateNewAccount ();
break;
case 2: //存款
SaveMoney();
break;
case 3: //查询
Inquire();
break;
case 4: //取款
Withdrawal();
break;
case 5: //销户
SellingHousehodes();
break;
case 6: //转账
Transfer();
break;
case 7: //查询所有用户信息
CheckAllInfro();
break;
case 8: //挂失
Loss();
break;
case 0:
printf("欢迎您再次使用！\n");
exit(0);
break;
}
}
}
void Withdrawal() //取款
{
int i,m;
float n;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("How much do you want to take out: ");
scanf("%f",&n);
if(n>2000)
{
printf("Taken out less than 2000, per time!\n");
Withdrawal();
break;
}
Total=n+Total;
if(Total>20000)
{
printf("Taken out per day should be less than 20000，Choose another day to take out.");
break;
}
if(n<=RemainAmount[i])
{
printf("Take your money away.\n");
RemainAmount[i]=RemainAmount[i]-n;
break;
}
else
printf("Remain is not enough，input another amount.\n");
}
}
void SaveMoney() //存款
{
int i,m;
float n;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("How much doyou want to save: ");
scanf("%f",&n);
RemainAmount[i]=RemainAmount[i]+n;
printf("Save successfully ！");
printf("Current remain is: %.2f\n",RemainAmount[i]);
m=0;
}
m=1;
main();
}
void Inquire() //查询
{
int i,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
}
void CreateNewAccount() //开户
{
int i,n=UserNumber,j=0;
float m;
char User[32],mima1[32],mima2[32];
printf("Input your user name please: ");
getchar();
scanf("%s",User);
for(i=0;i<n+1;i++)
{
if(strcmp(User,UserName[i])==0)
{
printf("Account already exit.\n");
break;
}
else
{
strcpy(UserName[UserNumber],User);
while(j!=1)
{
printf("Input code please: ");
scanf("%s",mima1);
printf("Now checking code again: ");
scanf("%s",mima2);
if(strcmp(mima1,mima2)==0)
{
printf("Code successfully set.\n");
printf("Input your save amount ： ");
scanf("%f",&m);
printf("OK，New account created.\n");
strcpy(CodeStr[UserNumber],mima1);
RemainAmount[UserNumber]=m;
j=1;
}
else
printf("Two different inputs, try again.\n ");
}
UserNumber++;
break;
}
}
}
void SellingHousehodes() //销户
{
int i,n,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("Make sure to delete ？\n <1>Sure <2>Not \n");
scanf("%d",&n);
if(n==1)
{
for(;i<UserNumber;i++)
{
strcpy(UserName[i],UserName[i+1]);
strcpy(CodeStr[i],CodeStr[i+1]);
RemainAmount[i]=RemainAmount[i+1];
}
}
UserNumber--;
printf("Successfully deleted ！\n");
m=0;
}
}
void Transfer() //转账
{
int i,n,j,s=1;
float k;
char User[32];
i=AccountCheck();
n=ReportLossVerification(i);
if(n==1)
n=Code(i);
while(n==1)
{
printf("Input the target account ：");
scanf("%s",User);
for(j=0;j<UserNumber;j++)
{
if(strcmp(UserName[j],User)==0)
{
n=2;
break;
}
}
if(j==UserNumber)
printf("Target account not found ，input again:\n");
}
while(n==2)
{
printf("Input transfer amount：");
scanf("%f",&k);
if(k<=RemainAmount[i])
{
RemainAmount[i]=RemainAmount[i]-k;
RemainAmount[j]=RemainAmount[j]+k;
printf("Transfer successfully ！\nCurrent remain amount is ： %.2f\n",RemainAmount[i]);
break;
}
else
printf("Remain not enough，Input again:\n");
}
}
void Loss() //挂失
{
int n,i,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
if(m==1)
{
printf("Sure to report lost ？\n <1>Sure <2>Not \n");
scanf("%d",&n);
if(n==1)
{
strcpy(LossName[LossNumber],UserName[i]);
LossNumber++;
printf("%s Reported successfully ！\n",UserName[i]);
}
}
}
void Exit()
{
}
void CheckAllInfro() //查询所有用户信息
{
int i;
for(i=0;i<UserNumber;i++)
printf("Account name:%15s Remain：%.2f\n",UserName[i],RemainAmount[i]);
}
int AccountCheck() //用户名验证
{
int m=1,i;
char User[32];
while(m==1)
{
printf("Input your Account name: ");
scanf("%s",User);
for(i=0;i<UserNumber;i++)
if(strcmp(UserName[i],User)==0)
{
m=0;
break;
}
if(i==UserNumber)
printf("Account not found ，Make sure to try again: \n");
}
return i;
}
int ReportLossVerification(int i) //挂失验证
{
int j,n;
for(j=0;j<LossNumber;j++)
{
if(strcmp(UserName[i],LossName[j])==0)
{
printf("This account already reported lost ，Delete lost report than try again！\n");
n=0;
break;
}
}
if(j==LossNumber)
n=1;
return n;
}
int Code(int i) //密码函数
{
char mima[32];
while(1)
{
printf("Input your passwords: ");
scanf("%s",mima);
if(strcmp(CodeStr[i],mima)==0)
{
printf("Log in successfully ！\n");
printf("Account ：%s Remain ： %.2f \n",UserName[i],RemainAmount[i]);
break;
}
else
printf("Wrong code ，try again.\n");
}
return 1;
}
直接用吧，txt文件你建一个放在程序目录，改掉你循环判断条件为true，用order不合适
void openfile()
{
FILE *fp;
int len;
char *ptr;
char *p;
if ((fp = fopen("data.txt", "r")) == NULL)
{
printf("cannot open infile\n");
}
char buf[256] = { 0 };
int i = 0;
while (fgets(buf, 1024, fp) != NULL)//读取数据
{
len = strlen(buf);
buf[len - 1] = '\0'; /*去掉换行符*/
ptr = strtok(buf, "\t");//拆分字符串
strcpy(UserName[i], ptr);
ptr = strtok(NULL, "\t");
strcpy(CodeStr[i], ptr);
ptr = strtok(NULL, "\t");
RemainAmount[i] = atof(ptr);
i++;
}
UserNumber = i;
fclose(fp);
}
void savefile()
{
FILE *fp;
char buf[256] = { 0 };
if ((fp = fopen("data.txt", "w")) == NULL)
{
printf("cannot open infile\n");
}
for (int i = 0; i < UserNumber;i++)
{
sprintf(buf, "%s\t%s\t%.2f\n", UserName[i], CodeStr[i], RemainAmount[i]);
fputs(buf, fp);
}
}
void main()
{
int order = 0; //命令
openfile();
while (true)
{
printf("******************************************************************\n");
printf("|| NM$L BANK ATM SYSTEM ||\n");
printf("|| ||\n");
printf("|| 1.Create new account. 4.Take money out. 8.Report Loss. ||\n");
printf("|| 2.Save money. 5.Delete a current account. ||\n");
printf("|| 3.Check current account. 6.Transfer money. 0.Exit. ||\n");
printf("|| 7.Give all user information. ||\n");
printf("|| ||\n");
printf(" ================================================================ \n");
printf("Give your orders please: ");
scanf("%d", &order);
printf("\n");
switch (order)
{
case 1: //开户
CreateNewAccount();
break;
case 2: //存款
SaveMoney();
break;
case 3: //查询
Inquire();
break;
case 4: //取款
Withdrawal();
break;
case 5: //销户
SellingHousehodes();
break;
case 6: //转账
Transfer();
break;
case 7: //查询所有用户信息
CheckAllInfro();
break;
case 8: //挂失
Loss();
break;
case 0:
printf("欢迎您再次使用！\n");
savefile();
exit(0);
break;
}
}
}
在你的代码基础上加了两个函数，分别是程序开始是读取文本 的readFile 以及退出时的writeFile.读写已经格式对齐。考虑到显示问题，字符数组只显示了10个长度，金额 只显示了5个长度。有需要可以自己稍微改下
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int AccountCheck(); //用户名验证
int ReportLossVerification(int); //挂失验证
int Code(int); //密码函数
float Total=0; //// 定义全局变量T,记录用户一天取款数的总和
void Withdrawal (); //取款函数
void SaveMoney (); //存款函数
void Inquire(); //查询函数
void SellingHousehodes(); //销户函数
void CreateNewAccount(); //开户函数
void Transfer(); //转账函数
void Loss(); //挂失函数
void Exit(); //退出函数
void CheckAllInfro(); //查询所有用户信息
void readFile(); // 从文本读入账户
void writeFile(); // 把账户写入文本
char UserName[100][30]; //用户名
char CodeStr[100][30]; //密码
char LossName[100][30]; //挂失用户名
float RemainAmount[100]; //存款余额
int UserNumber=0; //用户数
int LossNumber=0; //挂失用户数
int main()
{
int order; //命令
/*
读入txt数据
*/
readFile();
while(order)
{
printf("******************************************************************\n");
printf("|| NM$L BANK ATM SYSTEM ||\n");
printf("|| ||\n");
printf("|| 1.Create new account. 4.Take money out. 8.Report Loss. ||\n");
printf("|| 2.Save money. 5.Delete a current account. ||\n");
printf("|| 3.Check current account. 6.Transfer money. 0.Exit. ||\n");
printf("|| 7.Give all user information. ||\n");
printf("|| ||\n");
printf(" ================================================================ \n");
printf("Give your orders please: ");
scanf("%d",&order);
printf("\n");
switch(order)
{
case 1: //开户
CreateNewAccount ();
break;
case 2: //存款
SaveMoney();
break;
case 3: //查询
Inquire();
break;
case 4: //取款
Withdrawal();
break;
case 5: //销户
SellingHousehodes();
break;
case 6: //转账
Transfer();
break;
case 7: //查询所有用户信息
CheckAllInfro();
break;
case 8: //挂失
Loss();
break;
case 0:
writeFile();
printf("欢迎您再次使用！\n");
exit(0);
break;
}
}
return 0;
}
void readFile(){ // 从文本读入账户
int i;
FILE *fpRead=fopen("data.txt","r");
for(i=0;!feof(fpRead);i++)
{
fscanf(fpRead,"%s",UserName[i]);
fscanf(fpRead,"%s",CodeStr[i]);
fscanf(fpRead,"%f",&RemainAmount[i]);
//fscanf(fpRead,"%f",&RemainAmount[i]);
printf("%10s %10s %5f\n",UserName[i],CodeStr[i],RemainAmount[i]);
}
UserNumber = i;
fclose(fpRead);
}
void writeFile(){ // 把账户写入文本
FILE *fpWrite=fopen("data.txt","w");
printf("%d\n",UserNumber);
for(int i=0;i<UserNumber;i++){
printf("%10s %10s %5f\n",UserName[i],CodeStr[i],RemainAmount[i]);
fprintf(fpWrite,"%10s%10s\n%5f",UserName[i],CodeStr[i],RemainAmount[i]);
}
fclose(fpWrite);
}
void Withdrawal() //取款
{
int i,m;
float n;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("How much do you want to take out: ");
scanf("%f",&n);
if(n>2000)
{
printf("Taken out less than 2000, per time!\n");
Withdrawal();
break;
}
Total=n+Total;
if(Total>20000)
{
printf("Taken out per day should be less than 20000，Choose another day to take out.");
break;
}
if(n<=RemainAmount[i])
{
printf("Take your money away.\n");
RemainAmount[i]=RemainAmount[i]-n;
break;
}
else
printf("Remain is not enough，input another amount.\n");
}
}
void SaveMoney() //存款
{
int i,m;
float n;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("How much doyou want to save: ");
scanf("%f",&n);
RemainAmount[i]=RemainAmount[i]+n;
printf("Save successfully ！");
printf("Current remain is: %.2f\n",RemainAmount[i]);
m=0;
}
m=1;
main();
}
void Inquire() //查询
{
int i,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
}
void CreateNewAccount() //开户
{
int i,n=UserNumber,j=0;
float m;
char User[32],mima1[32],mima2[32];
printf("Input your user name please: ");
getchar();
scanf("%s",User);
for(i=0;i<n+1;i++)
{
if(strcmp(User,UserName[i])==0)
{
printf("Account already exit.\n");
break;
}
else
{
strcpy(UserName[UserNumber],User);
while(j!=1)
{
printf("Input code please: ");
scanf("%s",mima1);
printf("Now checking code again: ");
scanf("%s",mima2);
if(strcmp(mima1,mima2)==0)
{
printf("Code successfully set.\n");
printf("Input your save amount ： ");
scanf("%f",&m);
printf("OK，New account created.\n");
strcpy(CodeStr[UserNumber],mima1);
RemainAmount[UserNumber]=m;
j=1;
}
else
printf("Two different inputs, try again.\n ");
}
UserNumber++;
break;
}
}
}
void SellingHousehodes() //销户
{
int i,n,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
while(m==1)
{
printf("Make sure to delete ？\n <1>Sure <2>Not \n");
scanf("%d",&n);
if(n==1)
{
for(;i<UserNumber;i++)
{
strcpy(UserName[i],UserName[i+1]);
strcpy(CodeStr[i],CodeStr[i+1]);
RemainAmount[i]=RemainAmount[i+1];
}
}
UserNumber--;
printf("Successfully deleted ！\n");
m=0;
}
}
void Transfer() //转账
{
int i,n,j,s=1;
float k;
char User[32];
i=AccountCheck();
n=ReportLossVerification(i);
if(n==1)
n=Code(i);
while(n==1)
{
printf("Input the target account ：");
scanf("%s",User);
for(j=0;j<UserNumber;j++)
{
if(strcmp(UserName[j],User)==0)
{
n=2;
break;
}
}
if(j==UserNumber)
printf("Target account not found ，input again:\n");
}
while(n==2)
{
printf("Input transfer amount：");
scanf("%f",&k);
if(k<=RemainAmount[i])
{
RemainAmount[i]=RemainAmount[i]-k;
RemainAmount[j]=RemainAmount[j]+k;
printf("Transfer successfully ！\nCurrent remain amount is ： %.2f\n",RemainAmount[i]);
break;
}
else
printf("Remain not enough，Input again:\n");
}
}
void Loss() //挂失
{
int n,i,m;
i=AccountCheck();
m=ReportLossVerification(i);
if(m==1)
m=Code(i);
if(m==1)
{
printf("Sure to report lost ？\n <1>Sure <2>Not \n");
scanf("%d",&n);
if(n==1)
{
strcpy(LossName[LossNumber],UserName[i]);
LossNumber++;
printf("%s Reported successfully ！\n",UserName[i]);
}
}
}
void Exit()
{
}
void CheckAllInfro() //查询所有用户信息
{
int i;
for(i=0;i<UserNumber;i++)
printf("Account name:%15s Remain：%.2f\n",UserName[i],RemainAmount[i]);
}
int AccountCheck() //用户名验证
{
int m=1,i;
char User[32];
while(m==1)
{
printf("Input your Account name: ");
scanf("%s",User);
for(i=0;i<UserNumber;i++)
if(strcmp(UserName[i],User)==0)
{
m=0;
break;
}
if(i==UserNumber)
printf("Account not found ，Make sure to try again: \n");
}
return i;
}
int ReportLossVerification(int i) //挂失验证
{
int j,n;
for(j=0;j<LossNumber;j++)
{
if(strcmp(UserName[i],LossName[j])==0)
{
printf("This account already reported lost ，Delete lost report than try again！\n");
n=0;
break;
}
}
if(j==LossNumber)
n=1;
return n;
}
int Code(int i) //密码函数
{
char mima[32];
while(1)
{
printf("Input your passwords: ");
scanf("%s",mima);
if(strcmp(CodeStr[i],mima)==0)
{
printf("Log in successfully ！\n");
printf("Account ：%s Remain ： %.2f \n",UserName[i],RemainAmount[i]);
break;
}
else
printf("Wrong code ，try again.\n");
}
return 1;
}