c - 使用结构和数组的 Strcmp 的 If 语句不起作用

Question

遇到一些问题，你会经常看到我在这里寻求帮助。我对 C 非常陌生。为基于学校的评估编写一个包含大约 5 个功能的程序。该程序与虚构业务中遇到的问题的问题定义相结合。到目前为止有五个功能。

函数1: MembershipInfo 存储公司的成员(member)信息(就像具有订阅/成员(member)系统的俱乐部)

函数2: SelectService 应该显示并提示用户选择可以提供给他们的各种服务。它使用结构体和数组以及各种 if。 if 语句没有运行，或者构建成功后没有显示在控制台上。

函数3: payment'根据成员(member)的成员(member)类型计算成员(member)需要支付的全部费用。计算输出0.0000。

功能 4: 与功能 1 类似，但适合希望按小时费率使用某些服务而无需成为成员(member)的客户。对此输出的计算也是 0.0000。

函数 5: MemberExp 应该跟踪成员(member)资格到期的日期并提醒用户。我想我必须以某种方式在注册时从功能 1 中的每个成员那里收集组日期，并将其与他们的成员(member)资格到期的日期进行比较。我有一个称为薪资计划的 float 变量，用于计算全部成本。这是一个人希望成为成员(member)的月数。

我正在 El Capitan 上使用 Xcode。

我的代码

#include <stdio.h>
#include <time.h>
#include <stdlib.h>

struct MembershipInfo{



float regfee;
int set;
float payplan;
char cust_fname[20];
char cust_lname[20];
char memtype[20];
char date[20];

};

/*Functions */

void MembershipInfo();
void Payment();
void SelectService();
void MemberExp();
void Accomodation();

int q;
int x=0;
int set;
float memcost;
float Fullcost;
char selection[20];


/*MAIN FUNCTION */


int main()

{


char decision[20];

printf("Are you registering a member or is it accomodation?, type in lowercase \n");
scanf( "%s" , decision);

if ( strcmp (decision, "member") ==0)
{
    MembershipInfo();

}

else {
    ( strcmp(decision, "accomodation") ==0);
    Accomodation();
}


MemberExp();

}


/* Function used to store membership information */
void MembershipInfo()
{
struct MembershipInfo member[x];
printf("Press 1 to continue or any other character to cancel \n ");
scanf( "%d", &set);

if (set==1) {

while (set==1) {
    x++ ;
    printf( "Please enter the first name of member\n");
    scanf( "%s", member[x].cust_fname);

    printf( "Please enter the last name of member\n");
    scanf( "%s", member[x].cust_lname);

    printf( "Please enter Membership type:\n Silver\n Gold\n Platinum\n");
    scanf( "%s", member[x].memtype);

    SelectService();

    printf("Please enter payment plan\n"); /* An integer value from 1 to 12 which determines how much months are being paid for */
    scanf( "%f", &member[x].payplan);


    Payment();




    printf("Do you have another member to register? Type 1 to continue or any number to End\n");
    scanf( "%d", &set);

}
    main();

    }
main();

}


/* Function used to calculate the amount to be paid by each member */
void Payment()
{

struct MembershipInfo member[x];

if (strcmp(member[x].memtype, "Silver") ==0) {
    memcost = 100;

if (strcmp(member[x].memtype, "Gold") ==0) {
    memcost = 180;

if (strcmp(member[x].memtype, "Platinum") ==0) {
    memcost = 300;
}
}
}

Fullcost = memcost * member[x].payplan ;
printf(" The Full cost is %f \n", Fullcost);


}


/* Function to Select Services for Members */

void SelectService()
{

struct MembershipInfo member[x];
if (strcmp(member[x].memtype, "Silver") ==0) {
    printf("Check");
}

}



/*Function to determine Membership Expiration*/

void MemberExp()
{



}

void Accomodation()
{

struct Accomodationinfo{
    char ac_fname[20];
    char ac_lname[20];
    int hours;
    char date[30];
    char selection[20];
    int Fullcost; //Full Cost is an integer and not a float because hours will be rounded off and therefore customer will pay a rounded off value



};


struct Accomodationinfo customer[x];
printf("Press 1 to continue or any other number to cancel \n");
scanf( "%d" , &set);
if (set==1) {


    while (set==1){
    x++;
    printf("Please enter customer's first name \n");
    scanf( "%s", customer[x].ac_fname);

    printf("Please enter customer's last name \n");
    scanf( "%s" , customer[x].ac_lname);

printf("You have either the Gym, Sports Centres, or Music Studio available\n");
scanf( "%s" , customer[x].selection);

printf("How many hours?\n");
scanf( "%d", &customer[x].hours);

customer[x].Fullcost = customer[x].hours * 8;
printf("The full cost is %f  per hour \n" , Fullcost );
    getchar();
    printf( "%s %s will have access to %s for %d hours \n", customer[x].ac_fname, customer[x].ac_lname , customer[x].selection, &customer[x].hours );
        getchar();
    printf("Do you have another customer for accomodation? Press 1 to continue or any other number to return to main \n ");
    scanf( "%d" , &set);
    }
    main();
}
main();

}

<强> SelectService Function

void SelectService()
{
    if (strcmp(Members[x].memtype, "Silver") ==0)
    {
        printf( "You have available any three of the following(Notice      the casino is not available):\n");
        printf( "Swimming Pools \n Spas \n Bars \n Arcade\n Sports Centres\n Resource Room\n Theatre\n Gym\n Food Courts\n Music Studio\n");
        for (q=0; q<4; q=q+1) {
            printf( "Please enter selection\n");
            scanf( "%s" , selection[q]);
            printf( "Your chosen selections are %s , %s and %s\n" , selection[1], selection[2], selection[3]);
    }


    if (strcmp(Members[x].memtype, "Gold") ==0) {
        printf( "You have available any five of the following\n");
        printf( "Casino \n Swimming Pools \n Spas \n Bars \n Arcade\n Sports Centres\n Resource Room\n Theatre\n Gym\n Food Courts\n Music Studio\n");
        for (q=0; q<6; q=q+1) {
            printf( "Please enter selection\n");
            scanf( "%s" , &selection[q]);


        }
        if (strcmp(Members[x].memtype, "Platinum") ==0) {
            printf( "You have all services available");
        }
    }
}

}

编辑:程序不断跳过函数 SelectService idk 。 不知道如何使这一点更清楚。尝试在您自己的编译器中运行它并解决问题？

Answer 1

以下代码合并了注释，可以干净地编译，并且是一种可能的实现。

您可能想要添加更多功能

#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>



#define MAX_DATE_LEN    (30)
#define MAX_MEMBERS     (100)
#define MAX_BUFFER_LEN  (20)
#define COST_PER_HOUR   (8)

struct MembershipInfo_t
{
    float regfee;
    int   set;
    unsigned payplan;
    char  cust_fname[ MAX_BUFFER_LEN ];
    char  cust_lname[ MAX_BUFFER_LEN ];
    char  memtype[ MAX_BUFFER_LEN ];
    char  date[ MAX_BUFFER_LEN ];
};


// prototypes
void processMembershipInfo( void );
void Payment( void );
void SelectService( void );
void MemberExp( void );
void processAccommodation( void );

//global data
struct MembershipInfo_t Members[ MAX_MEMBERS ];
int   numMembers = 0;

int q;
int x=0;
int set;
unsigned memcost;
unsigned Fullcost;
char selection[ MAX_BUFFER_LEN ];


/*MAIN FUNCTION */


int main( void )
{
    int done = 0;

    while( !done  && (x < MAX_MEMBERS) )
    {
        // clear stdin
        int ch;
        while( (ch = getchar()) != EOF && '\n' != ch );

        // display menu
        printf( "\nm: Member processing");
        printf( "\na: Accommodiation processing:");
        printf( "\nq: quit");
        printf( "\n");

        // get user menu selection
        int choice = 0;
        choice = getchar();

        // process the user menu choice
        switch( tolower(choice) )
        {
            case 'a':
                processAccommodation();
                break;

            case 'm':
                processMembershipInfo();
                break;

            case 'q':
                done = 1;
                break;

            default:
                printf( "\n %c is not a valid entry\n", (char)choice);
                break;
        } // end switch

        if( !done ) x++;  // step to next member entry in Members[] array
    } // end while


    if( x )
    {// then some members entered
        MemberExp();
    }
    return 0;
} // end function main()


/* Function used to store membership information */
void processMembershipInfo()
{
    printf( "Please enter the first name of member\n");
    scanf( " %19s", Members[x].cust_fname);

    printf( "Please enter the last name of member\n");
    scanf( " %19s", Members[x].cust_lname);

    printf( "Please enter Membership type:\n Silver\n Gold\n Platinum\n");
    scanf( " %19s", Members[x].memtype);

    SelectService();

    do
    {
        printf("Please enter payment plan range: 1...12 months\n"); /* An integer value from 1 to 12 which determines how much months are being paid for */
        scanf( "%u", &Members[x].payplan);
    } while( (1 > Members[x].payplan) && (12 < Members[x].payplan) );


    Payment();
} // end function: processMembershipInfo


/* Function used to calculate the amount to be paid by each member */
void Payment()
{
    if (strcmp(Members[x].memtype, "Silver") ==0)
    {
        memcost = 100;
    }

    else if (strcmp(Members[x].memtype, "Gold") ==0)
    {
        memcost = 180;
    }

    else if (strcmp(Members[x].memtype, "Platinum") ==0)
    {
        memcost = 300;
    }

    Fullcost = memcost * Members[x].payplan ;
    printf(" The Full cost is %u \n", Fullcost);
} // end function: Payment


/* Function to Select Services for Members */
void SelectService()
{
    if (strcmp(Members[x].memtype, "Silver") ==0)
    {
        printf("Check");
    }
}



/*Function to determine Membership Expiration*/

void MemberExp()
{

}

struct Accomodationinfo
{
    char       ac_fname[ MAX_BUFFER_LEN ];
    char       ac_lname[ MAX_BUFFER_LEN ];
    unsigned   hours;
    char       date[ MAX_DATE_LEN ];
    char       selection[ MAX_BUFFER_LEN ];
    unsigned   Fullcost; //Full Cost is an integer and not a float because hours will be rounded off and therefore customer will pay a rounded off value
};

void processAccommodation()
{

    struct Accomodationinfo customer;

    printf("Press 1 to continue or any other number to cancel \n");

    printf("Please enter customer's first name \n");
    scanf( " %19s", customer.ac_fname);

    printf("Please enter customer's last name \n");
    scanf( " %19s" , customer.ac_lname);

    printf("You have either the Gym, Sports Centres, or Music Studio available\n");
    scanf( " %19s" , customer.selection);

    printf("How many hours?\n");
    scanf( "%u", &customer.hours);

    customer.Fullcost = customer.hours * COST_PER_HOUR;
    printf("The full cost is $%u at $%u per hour \n", Fullcost, COST_PER_HOUR );

    printf( "%s %s will have access to %s for %u hours \n",
            customer.ac_fname,
            customer.ac_lname ,
            customer.selection,
            customer.hours );
} // end function: processAccommodation