1
void menu() {
int op;
printf("\n Choose a option from below : \n\n");
printf(" 1: Add Contact\n"
" 2: View A Contact\n"
" 3: View All Contacts\n"
" 4: View All Contacts With a Common First Character\n"
" 5: Delete All Contact\n"
" 6: Delete A Contact\n"
" 7: Replace A Contact Name\n"
" 8: Replace A Contact Number\n"
" 9: Refresh\n"
" 10: Exit\n\n");
printf(" Which one ? ");
fgets(op, 5, stdin);
switch ((int)op) {
case 1: addrecords(); break;
case 2: viewone(); break;
case 3: viewall(); break;
case 4: viewonechar(); break;
case 5: deleteall(); break;
case 6: deleteone(); break;
case 7: replaceone(); break;
case 8: replaceonenumber(); break;
case 9: refresh(); break;
case 10: exit(0); break;
default:
printf ("\n Wrong Option.\n\n");
menu();
break;
}
}
void addrecords() {
char name[50];
char number[20];
printf("\n\n Enter Contact Number (+880) : "); //Skips this
fgets(number, 20, stdin);
check(number);
printf(" Enter Contact Name : "); //Comes in here
fgets(name, 50, stdin);
fp = fopen("Phonebook.txt","a");
fprintf(fp, "%s %s\n", name, number);
fclose(fp);
printf("\n Contact Successfully Saved!\n Returning To Main Menu...\n\n");
menu();
}
void check(char n[20]) {
char name[25];
char ncheck[20];
fp = fopen("Phonebook.txt", "r");
fscanf(fp, "%s %s", name, ncheck);
while (!feof(fp)) {
if ((strcmp(ncheck, n)) == 0) {
printf ("\n Contact Already Exists.\n\n");
fclose(fp);
menu();
} else {
fscanf (fp, "%s %s", name, ncheck);
}
}
}
好吧我編輯了我的程序。我輸入1後,程序說錯了選項。但我正在寫入一個。雖然我做得對,但爲什麼程序顯示錯誤的選項?這是否與fgets
?現在有什麼問題?scanf和fgets在同一個程序中
沒有辦法讓scanf不留任何換行符嗎? –
我的建議:不要使用'scanf',而是用你需要寫的函數替換它,比如'int GetInteger()'。使用''fgets''(http)替換'scanf('%d',&op);'''GetInteger()'''GetInteger()'函數非常容易編寫~3-4行代碼。 ://www.cplusplus.com/reference/cstdio/fgets/)和['atoi'](http://www.cplusplus.com/reference/cstdlib/atoi/) –
請看[Why is「while( !(feof(file))「總是錯?](http://stackoverflow.com/q/5431941/2173917) –