我是C语言的新手,我需要帮助。
程序将询问用户帐号和帐户密码。然后将搜索文件“ Account.txt”。如果帐号和密码与写在文件上的内容匹配,则会显示另一个选项,例如余额 查询,存款,< strong>提款和退出。
如何在文件中搜索匹配项?我该怎么办?
以下是一些代码:
void OpenAnAccount() {
FILE * fptr;
fptr = fopen("Account.txt", "w");
if (fptr == NULL) {
printf("File does not exists \n");
}
printf("*************************************\n\n");
printf("\n ACCOUNT CREATION ");
printf("\n**********************************\n");
printf("Enter Your Account Number :\n");
scanf("%d", & acctno);
printf("Enter your Name:\n");
scanf("%s", & acctname);
printf("Enter your Account Pin: \n");
scanf("%d", & acctpin);
printf("Please Enter Your Initial Deposit :");
scanf("%f", & dep);
fprintf(fptr, "%d%s%d%f\n", acctno, acctname,
acctpin);
}
void BankTransactions() {
int AN, AP;
printf("Enter 5 digits Account Number :\n");
scanf("%d", & AN);
printf("Enter 4 digits Accoount Pin :\n");
scanf("%d", & AP);
}
答案 0 :(得分:0)
存储帐号和 pin ,并在每行中用逗号(,)和单个条目隔开。
4654654688481,1234
char *account,*pin;
FILE *myfile = fopen ( filename, "r" );
if(myfile)
{
char entry [100]; //maximum line size
while(fgets(entry,sizeof(entry),myfile)!= NULL)
{
account=strtok(entry,",");
pin = strtok(NULL,",");
//match these with user input if matches break out of loop
}
fclose (myfile);
}
您可以执行以下操作。您将可以检索“帐户”和“固定”