为什么当我开始输入更改服务类型或'4'时，循环会停止？???以及其他一些问题
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在此代码中，从输入“ 1”开始输入详细信息，然后输入“ 2”以查看详细信息，“ 3”以查看并选择要选择的服务类型会遇到一些问题，但是无论何时我输入一旦到达“ changing service（1-8）type？”，“ 4”循环便会停止。然后也可以通过输入“ 6”和“ 7”来分别搜索客户名称和日期，并显示已存储在文件中的信息，但是只要我输入名称或日期，它都表示细分错误。那么，大家对如何解决它有任何建议吗？
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void entry()
FILE * fpointer;
char name[20], gender[20], op, option, date[50];
int visit_ID, phone_number, service_needed, change_service;
float service_fee, payment_made, changes, change_service_fee;
printf("\n\nEnter information:\n");
printf("\nEnter name: ");
scanf("%s", name);
printf("\n\nEnter your ID number(Number only): ");
scanf("%d", &visit_ID);
printf("\n\nEnter today date in dd-mm-yy: ");
scanf("%s" ,date);
printf("\n\nEnter your gender(Male/Female): ");
scanf("%s",gender);
printf("\n\nEnter your phone number: ");
scanf("%d", &phone_number);
printf("\n\nDone registered\n\n");
if((fpointer = fopen("visitdetails.txt", "a")) == NULL)
perror("Write");
exit(1);
fprintf(fpointer, "Visit ID = %d", visit_ID);
fprintf(fpointer, "\nCustomer name = %s", name);
fprintf(fpointer, "\nLast visit date : %s", date);
fprintf(fpointer,"\nLast Service type repaired: %d", service_needed);
fscanf(fpointer,"%d",service_needed);
fprintf(fpointer, "\nLast Service fee: %.2f",service_fee);
fprintf(fpointer,"\nLast payment: %.2f",payment_made);
printf("\n\nRecord Written Successfully!!!\n\n");
fclose(fpointer);
void Repair()
char name[20], gender[20], op, option, date[50];
int visit_ID, phone_number,service_needed;
float service_fee, payment_made, changes, change_service_fee;
FILE *Welcome;
Welcome = fopen("visitdetails.txt","r");
printf("\nWhich service type do you need(1-8)? ");
scanf("%d", &service_needed);
switch(service_needed)
case 1:
printf("\nThe cost of it will be 30RM for Normal and 50RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 2:
printf("\nThe cost of it will be 40RM for Normal and 70RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 3:
printf("\nThe cost of it will be 330RM for Normal and 430RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 4:
printf("\nThe cost of it will be 160RM for Normal and 200RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 5:
printf("\nThe cost of it will be 180RM for Normal and 210RM for Urgent(type the cost): ");
scanf("%f",&service_fee);
break;
case 6:
printf("\nThe cost of it will be 50RM for Normal and 80RM for Urgent(type the cost): ",service_fee);
scanf("%f",&service_fee);
break;
case 7:
printf("\nThe cost of it will be 100RM for Normal and 150RM for Urgent(type the cost): ",service_fee);
scanf("%f",&service_fee);
break;
case 8:
printf("\nThe cost of it will be 50RM for Normal and 75RM for Urgent(type the cost): ",service_fee);
scanf("%f",&service_fee);
break;
default:
printf("Invalid option");
void Viewing_Store()
FILE *view;
view = fopen("visitdetails.txt","r");
printf("No | Service Type | Needed Days | Service Fee | \n");
printf(" |Normal|Urgent|\n");
printf("1. | Remove virus,Malware, or Spyware | 2 | 30RM | 50RM |\n");
printf("2. | Troubleshot and fix computer running slow | 2 | 40RM | 70RM |\n");
printf("3. | Laptop Screen Replacement | 3 | 330RM| 430RM|\n");
printf("4. | Laptop Keyboard Replacement | 2 | 160RM| 200RM|\n");
printf("5. | Laptop Battery Replacement | 1 | 180RM| 210RM|\n");
printf("6. | Operating System Format and Installation | 2 | 50RM | 80RM |\n");
printf("7. | Data Backup and Recovery | 2 | 100RM| 150RM|\n");
printf("8. | Internet Connectivity issues | 1 | 50RM | 75RM |\n");
fclose(view);
void payment_store()
FILE *payment_stores;
char name[20], gender[20], op, option, date[50],choose;
int visit_ID, phone_number, service_needed, change_service;
float service_fee, payment_made, changes, change_service_fee,price;
payment_stores = fopen("visitdetails.txt", "a");
printf("\nDo you change your service type(Y/N): \n",choose);
scanf("%s",&choose);
if(choose == 'Y')
printf("Here is the price %.2f\n", change_service_fee);
printf("\n\nPayment: ", payment_made);
scanf("%f",&payment_made);
if(payment_made > change_service_fee)
changes = payment_made - change_service_fee;
printf("\nHere is your changes: %.2f\n", changes);
else if(payment_made == change_service_fee)
changes = payment_made - change_service_fee;
printf("\nHere is your changes: %f\n", changes);
else
printf("Error");
else if(choose == 'N')
printf("\n\nPayment: ", payment_made);
scanf("%f",&payment_made);
if(payment_made > service_fee)
changes = payment_made - service_fee;
printf("\nHere is your changes :%.2f\n", changes);
else if(payment_made == service_fee)
changes = payment_made - service_fee;
printf("\nHere is your changes %f\n", changes);
else
printf("Error");
fprintf(payment_stores,"\nPayment: %.2f",payment_made);
fclose(payment_stores);
void change_type()
FILE *change;
char name[20], gender[20], op, option, date[50];
int visit_ID, phone_number, service_needed, change_service;
float service_fee, payment_made, changes, change_service_fee;
change = fopen("visitdetails.txt","r");
printf("\nAre you sure you want to change the service type(Y/N) : ", op);
scanf("%s", &op);
if(op == 'Y')
printf("\nWhat service type do you want to change into(1-8)? ", change_service);
scanf("%d", &change_service);
switch(change_service)
case 1:
printf("\nThe cost of it will be 30RM for Normal and 50RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 2:
printf("\nThe cost of it will be 40RM for Normal and 70RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 3:
printf("\nThe cost of it will be 330RM for Normal and 430RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 4:
printf("\nThe cost of it will be 160RM for Normal and 200RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 5:
printf("\nThe cost of it will be 180RM for Normal and 210RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 6:
printf("\nThe cost of it will be 50RM for Normal and 80RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 7:
printf("\nThe cost of it will be 100RM for Normal and 150RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 8:
printf("\nThe cost of it will be 50RM for Normal and 75RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
default:
printf("Invalid option");
else if(op == 'N')
printf("\nThe final price will be : %.2f", service_fee);
printf("\nClick on payment to pay");
else
printf("Error Input");
fprintf(change, "\n\nChanging service type into: %d", change_service);
fprintf(change, "\nThe price of this service type is: %.2f", change_service_fee);
fprintf(change, "\nThe price will still be: %.2f", service_fee);
fclose(change);
void any_visit(char anv[])
FILE *anyvisit;
char name[200], gender[20],date[50];
int visit_ID, phone_number, service_needed, change_service, set;
float service_fee, payment_made, changes, change_service_fee;
anyvisit = fopen("visitdetails.txt","r");
while(fscanf(any_visit, "%s %d %s %s %d %d\n", name, visit_ID, date, gender, phone_number, payment_made) !=EOF)
set = strcmp(date, anv);
if(set == 0)
printf("Visit_ID is %d", visit_ID);
printf("\nName : %s", name);
printf("\nGender is %s", gender);
printf("\nPhone number is %d", phone_number);
printf("\nPayment : %.2f", payment_made);
fclose(anyvisit);
void search(char cnm[])
FILE *search;
char name[200], gender[20],date[50];
int visit_ID, phone_number, service_needed, change_service,tes;
float service_fee, payment_made, changes, change_service_fee;
search = fopen("visitdetails.txt","r");
while(fscanf(search, "%s %d %s %s %d %d\n", name, visit_ID, date, gender, phone_number, payment_made) !=EOF)
tes = strcmp(name, cnm);
if (tes == 0)
printf("Visit_ID is %d", visit_ID);
printf("Date of visit is %s", date);
printf("\nGender is %s", gender);
printf("\nPhone number is %d", phone_number);
printf("\nPayment: %d", payment_made);
fclose(search);
void main()
char name[200], gender[20], op, option, ch, cnm[20], anv[20],date[50];
int visit_ID, phone_number, service_needed, change_service;
float service_fee, payment_made, changes, change_service_fee;
printf("*****Welcome to the Computer center*****\n");
printf("\nBefore entering the store and have your equipment repair, it is best to view the store\n");
do
printf("\nPress '1' to enter and have your data store");
printf("\nPress '2' to View the store");
printf("\nPress '3' to have your equipment being repaired");
printf("\nPress '4' if you want to change your repair type");
printf("\nPress '5' to pay the cost of your repair");
printf("\nPress '6' if you want to Search");
printf("\nPress '7' if you want to search payment and unpaid balance by any visit");
printf("\nPress '0' to exit");
printf("\nEnter your choice : ");
scanf("%d",&ch);
switch(ch)
case 1: entry();
break;
case 2: Viewing_Store();
break;
case 3: Repair();
break;
case 4:change_type();
break;
case 5: payment_store();
break;
case 6: printf("Enter your name: ");
scanf("%s", cnm);
search(cnm);
break;
case 7: printf("Enter the date you visit: ");
scanf("%d", anv);
any_visit(anv);
break;
case 0: exit(0);
default: printf("\nInvalid Entry!!! ");
while(ch != 0);
答案
I've tried to reduce as many warning as possible however, there are some warning like; data argument not used by format string [-Wformat-extra-args], format specifies type 'int ' but the argument has type 'int' [-Wformat]. I don't understand what should be change from it.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void entry()
FILE * fpointer;
char name[20], gender[20], date[50];
int visit_ID, phone_number, service_needed;
printf("\n\nEnter information:\n");
printf("\nEnter name: ");
scanf("%s", name);
printf("\n\nEnter your ID number(Number only): ");
scanf("%d", &visit_ID);
printf("\n\nEnter today date in dd-mm-yy: ");
scanf("%s" ,date);
printf("\n\nEnter your gender(Male/Female): ");
scanf("%s",gender);
printf("\n\nEnter your phone number: ");
scanf("%d", &phone_number);
printf("\n\nDone registered\n\n");
if((fpointer = fopen("visitdetails.txt", "a")) == NULL)
perror("Write");
exit(1);
fprintf(fpointer, "Visit ID = %d", visit_ID);
fprintf(fpointer, "\nCustomer name = %s", name);
fprintf(fpointer, "\nLast visit date : %s", date);
fprintf(fpointer,"\nLast Service type repaired: %d", service_needed);
printf("\n\nRecord Written Successfully!!!\n\n");
fclose(fpointer);
void Repair()
int service_needed;
float service_fee;
FILE *Welcome;
Welcome = fopen("visitdetails.txt","r");
printf("\nWhich service type do you need(1-8)? ");
scanf("%d", &service_needed);
switch(service_needed)
case 1:
printf("\nThe cost of it will be 30RM for Normal and 50RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 2:
printf("\nThe cost of it will be 40RM for Normal and 70RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 3:
printf("\nThe cost of it will be 330RM for Normal and 430RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 4:
printf("\nThe cost of it will be 160RM for Normal and 200RM for Urgent(type the cost): ");
scanf("%f", &service_fee);
break;
case 5:
printf("\nThe cost of it will be 180RM for Normal and 210RM for Urgent(type the cost): ");
scanf("%f",&service_fee);
break;
case 6:
printf("\nThe cost of it will be 50RM for Normal and 80RM for Urgent(type the cost): ");
scanf("%f",&service_fee);
break;
case 7:
printf("\nThe cost of it will be 100RM for Normal and 150RM for Urgent(type the cost): ");
scanf("%f",&service_fee);
break;
case 8:
printf("\nThe cost of it will be 50RM for Normal and 75RM for Urgent(type the cost): ");
scanf("%f",&service_fee);
break;
default:
printf("Invalid option");
fclose(Welcome);
void Viewing_Store()
FILE *view;
view = fopen("visitdetails.txt","r");
printf("No | Service Type | Needed Days | Service Fee | \n");
printf(" |Normal|Urgent|\n");
printf("1. | Remove virus,Malware, or Spyware | 2 | 30RM | 50RM |\n");
printf("2. | Troubleshot and fix computer running slow | 2 | 40RM | 70RM |\n");
printf("3. | Laptop Screen Replacement | 3 | 330RM| 430RM|\n");
printf("4. | Laptop Keyboard Replacement | 2 | 160RM| 200RM|\n");
printf("5. | Laptop Battery Replacement | 1 | 180RM| 210RM|\n");
printf("6. | Operating System Format and Installation | 2 | 50RM | 80RM |\n");
printf("7. | Data Backup and Recovery | 2 | 100RM| 150RM|\n");
printf("8. | Internet Connectivity issues | 1 | 50RM | 75RM |\n");
fclose(view);
void payment_store()
FILE *payment_stores;
char choose;
float service_fee, payment_made, changes, change_service_fee;
payment_stores = fopen("visitdetails.txt", "a");
printf("\nDo you change your service type(Y/N): ",choose);
scanf("%s",&choose);
if(choose == 'Y')
printf("\nHere is the price %.2f\n", change_service_fee);
printf("\nPayment: ", payment_made);
scanf("%f",&payment_made);
if(payment_made > change_service_fee)
changes = payment_made - change_service_fee;
printf("\nHere is your changes: %.2f\n", changes);
else if(payment_made == change_service_fee)
changes = payment_made - change_service_fee;
printf("\nHere is your changes: %f\n", changes);
else
printf("Error");
else if(choose == 'N')
printf("\n\nPayment: ", payment_made);
scanf("%f",&payment_made);
if(payment_made > service_fee)
changes = payment_made - service_fee;
printf("\nHere is your changes :%.2f\n", changes);
else if(payment_made == service_fee)
changes = payment_made - service_fee;
printf("\nHere is your changes %f\n", changes);
else
printf("Error");
fprintf(payment_stores, "\nLast Service fee: %.2f",service_fee);
fprintf(payment_stores,"\nPayment: %.2f",payment_made);
fclose(payment_stores);
int change_type()
FILE *change;
char op;
int change_service;
float service_fee, change_service_fee;
change = fopen("visitdetails.txt","a");
printf("\nAre you sure you want to change the service type(Y/N) : ", op);
scanf("%s", &op);
if(op == 'Y')
printf("\nWhat service type do you want to change into(1-8)? ", change_service);
scanf("%d", &change_service);
switch(change_service)
case 1:
printf("\nThe cost of it will be 30RM for Normal and 50RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 2:
printf("\nThe cost of it will be 40RM for Normal and 70RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 3:
printf("\nThe cost of it will be 330RM for Normal and 430RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 4:
printf("\nThe cost of it will be 160RM for Normal and 200RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 5:
printf("\nThe cost of it will be 180RM for Normal and 210RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 6:
printf("\nThe cost of it will be 50RM for Normal and 80RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 7:
printf("\nThe cost of it will be 100RM for Normal and 150RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fee);
break;
case 8:
printf("\nThe cost of it will be 50RM for Normal and 75RM for Urgent(type the cost): ",change_service_fee);
scanf("%f",&change_service_fe以上是关于为什么当我开始输入更改服务类型或'4'时，循环会停止？???以及其他一些问题的主要内容，如果未能解决你的问题，请参考以下文章
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