C 为什么我的代码没有';你不能像我想的那样工作吗?我怎样才能检查日期的有效性?
我想让用户插入她的名字并检查他是否插入了字符,否则让他插入一个有效的名字,并为卡号插入一个6整数,否则让他插入一个有效的数字,然后插入到期日期。现在,如何检查插入日期是否有效C 为什么我的代码没有';你不能像我想的那样工作吗?我怎样才能检查日期的有效性?,c,validation,struct,kali-linux,C,Validation,Struct,Kali Linux,我想让用户插入她的名字并检查他是否插入了字符,否则让他插入一个有效的名字,并为卡号插入一个6整数,否则让他插入一个有效的数字,然后插入到期日期。现在,如何检查插入日期是否有效 int main() { char name[20]; int cardnumber, pin; float balance; printf("Enter your first and last name : "); scanf("%s&qu
int main()
{
char name[20];
int cardnumber, pin;
float balance;
printf("Enter your first and last name : ");
scanf("%s",name);
for (int i = 0; name[i] != '\0'; ++i)
{
if (!(name[i] >= 'a' && name[i] <= 'z')
|| !(name[i] >= 'A' && name[i] <= 'Z'))
{
printf("The entered name is not all Alphabet char plz insert a valid name\n");
break;
}
}
printf("insert your card number ~6 digit~\n ");
scanf("%d", &cardnumber);
if (!(sizeof(cardnumber) != 6)
|| !(cardnumber >= '0' && cardnumber <= '9'))
{
printf("plz insert a valid 6digit card number\n ");
scanf("%d", cardnumber);
}
struct date datei;
printf("insert Expiration date of your card :\n");
printf("day :");
scanf("%d", &datei.day);
printf("month :");
scanf("%d", &datei.month);
printf("year :");
scanf("%d", &datei.year);
printf("Enter your acount Balance " );
scanf("%d", &balance);
printf("Enter your pin ~3digit~ :");
// scanf("%d", &pin);
// if (sizeof(pin)>3)
// {printf("Enter a valid pin \n");
// scanf("%d", &pin);}
scanf("%d", pin);
while (sizeof(pin) == 3)
{
printf("ENTER YOUR SECRET PIN NUMBER:");
scanf("%d", &pin);
if (sizeof(pin) != 3)
printf("PLEASE ENTER VALID PASSWORD\n");
}
}
intmain()
{
字符名[20];
内部卡号,pin;
浮动天平;
printf(“输入您的名字和姓氏:”);
scanf(“%s”,名称);
对于(int i=0;name[i]!='\0';++i)
{
如果(!(姓名[i]>='a'&姓名[i]='a'&姓名[i]='0'&卡号3)
//{printf(“输入有效pin\n”);
//scanf(“%d”,&pin);}
扫描频率(“%d”,引脚);
while(sizeof(pin)==3)
{
printf(“输入您的密码:”);
scanf(“%d”和pin);
如果(引脚尺寸)!=3)
printf(“请输入有效密码\n”);
}
}
您在这些语句中遗漏了&
。请将这些语句更改为:
scanf("%d",&cardnumber);
scanf("%d",&datei.day);
scanf("%d",&datei.month);
scanf("%d",&datei.year);
scanf(“%d”,cardnumber);
=>scanf(“%d”,cardnumber);
。测试逻辑看起来也错误。为什么要这样做?这是C语法。请访问手册页:
scanf("%d",&cardnumber);
scanf("%d",&datei.day);
scanf("%d",&datei.month);
scanf("%d",&datei.year);