私がしたことは、ダイナミックアロケーションで作業を始める前に、メインの開始位置に座席の最大数を指定することです。そこから、次のようにコードを完成させました。 43行目、109行目には修正できないような2つの警告メッセージがあります。
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int i,j,numberofseats,temp;
char platenr[8],selection;
char firstname[20],lastname[20];
char phone[11];
char *p;
typedef struct
{
char fullname[40];
unsigned short phonenr[10];
unsigned int seatnr;
}PASSENGERS;
void readfile(PASSENGERS passenger[])
{ char buff[60];
FILE *businfo;
businfo = fopen ("bus.txt","r");
if (businfo == NULL)
{
printf("Error Opening File, check if file bus.txt is present");
exit(1);}
else
{
fscanf(businfo,"%s %d",platenr, &numberofseats);
printf("Bus Licence plate Nr is: %s, and Number of Seats is: %d.", platenr, numberofseats);
for (j=0;j<numberofseats;j++)
{passenger[j].seatnr=j+1;
strcpy(passenger[j].fullname,"\0");
}
while (fgets(buff,sizeof(buff),businfo)!=0)
{sscanf(buff, "%s %s %d %s", firstname, lastname, &temp,phone);
strcpy(passenger[temp-1].fullname,firstname);
strcat (passenger[temp-1].fullname, " ");
strcat(passenger[temp-1].fullname,lastname);
i=0;
for (p=phone;*p!='\0';p++)
{
(passenger[temp-1].phonenr[i])=*p -'0';
i++;
}
}
}
}
void countfreeseats(PASSENGERS passenger[]){
int freeseats = 0;
for (j=0; j<numberofseats; j++)
{
strcmp(passenger[j].fullname,"\0")==0 ? freeseats = freeseats + 1 : freeseats ;}
printf ("There are %d Free Seats in this Bus. \n", freeseats);
printf("Seats that are Available are:\n");
for (j=0; j<numberofseats; j++)
{if (strcmp(passenger[j].fullname,"\0")==0)
printf ("%u\n", passenger[j].seatnr);
}
freeseats = 0;
}
void changeData(PASSENGERS *target){
unsigned short tempdigit;
printf("Enter Passenger's first name:");
scanf("%s",firstname);
printf("Enter Passenger's last name:");
scanf("%s",lastname);
strcpy(target->fullname,firstname);
strcat (target->fullname, " ");
strcat(target->fullname,lastname);
printf("Enter Passenger's phone Nr:");
scanf("%s",phone);
i=0;
for (p=phone;*p!='\0';p++)
{
(target->phonenr[i])=*p -'0';
i++;
}
}
void searchpassenger(PASSENGERS passenger[], char selection)
{ char tempsel,tmpfirst[20],tmplast[20];
unsigned short tempphone[10];
if (selection == '1')
{ printf("Enter Passenger's first name:");
scanf("%s",tmpfirst);
printf("Enter Passenger's last name:");
scanf("%s",tmplast);
strcat (tmpfirst, " ");
strcat(tmpfirst,tmplast);
for (j=0;j<numberofseats;j++)
if (strcmp(passenger[j].fullname,tmpfirst)==0)
printf ("Passenger %s has Seat Nr #: %u\n",tmpfirst,passenger[j].seatnr);
}
else if (selection == '2')
{ printf("Enter Passenger's Phone Nr:");
scanf("%s",phone);
i=0;
for (p=phone;*p!='\0';p++)
{
(tempphone[i])=*p -'0';
i++;
}
for (j=0;j<numberofseats;j++)
{if (strcmp(tempphone,passenger[j].phonenr)==0)
printf("Passenger %s has Seat Nr %hd already Booked",passenger[j].fullname,passenger[j].seatnr);
}
}
}
void cancelSeat(PASSENGERS *target){
strcpy(target->fullname,"\0");
for (i=0;i<10;i++)
target->phonenr[i]=0;
printf("Seat Nr %d is now Free",temp);
}
void showList(PASSENGERS passenger[])
{
printf("The following Seats are Booked: \n Name, PhoneNr, SeatNr\n\n"); /*Emfanisi minimatos*/
for (i=0; i<numberofseats; i++)
if (strcmp(passenger[i].fullname,"\0")!=0)
{
printf("%s, ",passenger[i].fullname);
for (j=0;j<10;j++)
{printf("%hu",passenger[i].phonenr[j]);}
printf(", %u\n",passenger[i].seatnr);
}
}
void writeFile(PASSENGERS passenger[])
{
FILE * output; /* Dilosi onomatos arxeiou */
output = fopen("output.txt","w"); /*dimiourgia i eggrafi pano se iparxon arxeio me onoma output.txt, mesw tis parametrou w*/
fprintf(output,"%s %d \n",platenr,numberofseats); /* mesw tis fprintf eksagogi pinakidas kai epikefalidas "Diagramma leoforeiou" sto arxeio output.txt. Allagi grammis opou xreiazetai*/
for (i=0; i<numberofseats; i++)
{if (strcmp(passenger[i].fullname,"\0")!=0)
{
fprintf(output,"%s ",passenger[i].fullname);
fprintf(output,"%u ",passenger[i].seatnr);
for (j=0;j<10;j++)
fprintf(output,"%hu",passenger[i].phonenr[j]);
fprintf(output,"%s","\n");
}
}
fclose(output); /* Kleisimo arxeiou*/
printf("File Saved as Output.txt");
}
int main(void)
{
PASSENGERS passenger[53];
readfile(passenger);
do{
printf("\n\nNeo Sistima Katagrafis Thesewn Leoforeiou\n");
printf("Please make a selection:\n\n");
printf("0. Exit\n");
printf("1. Empty Seats \n");
printf("2. Book Specific Seat \n");
printf("3. Advanced Search of Booked Seats\n");
printf("4. Cancel Seat Booking\n");
printf("5. Show List of Booked Seats\n");
scanf(" %c",&selection);
if (selection=='1')
countfreeseats(passenger);
else if (selection=='2')
{
printf("Please give seat nr (between 1 and %d) that you want to book:\n", numberofseats);
scanf("%d",&temp);
if (temp >numberofseats || temp <= 0)
{printf("Error: Seat nr should be between 1 and %d", numberofseats);}
else if (strcmp(passenger[temp-1].fullname,"\0")!=0)
printf("Error: Seat is already booked");
else
changeData(&passenger[temp-1]);
}
else if (selection=='3')
{
char tempsel;
printf("Do you want to search with Name (1) or Phone Nr (2)?\n");
scanf(" %c",&tempsel);
searchpassenger(passenger,tempsel);
}
else if (selection=='4')
{
printf("Please give Seat Nr (between 1 and %d) that you want to Cancel Booking:\n", numberofseats);
scanf("%d",&temp);
if (temp >numberofseats || temp <= 0)
{printf("Error: Seat nr should be between 1 and %d", numberofseats);}
else if (strcmp(passenger[temp-1].fullname,"\0")==0)
printf("Error: Seat is already free");
else
cancelSeat(&passenger[temp-1]);
}
else if (selection=='5') /*Menu 6 - Emfanisi listas kratimenon thesewn taksinomimenon kata ayksonta arithmo*/
{
showList(passenger);
}
} while (selection!='0');
{
writeFile(passenger);
}
}
私は 'main()'が不完全だと思います。また、関数 'readfile()'と 'main()'の配列 'passenger'は絶対に関係がないことを知っていますよね? –
はいこれは問題だと思われます。しかし、関数内で乗客配列を初期化し、txtファイルのデータを入力してから、同じ乗客配列を本体に保持するにはどうしたらいいですか? – baskon1