銀行系統，跟蹤日期，並允許菜單選擇

Question

我想做一個簡單的銀行業務程序，允許用戶從4個選項列表中進行選擇，然後根據用戶選擇的內容，它將執行該操作並然後詢問用戶是否想要另一個選項。我還必須跟蹤輸入的日期，並確保無法輸入更早的日期。我有用戶輸入設置，但我很難找到一種方法來使選項工作，以及設置日期檢查。我想過把這些選項放在while循環中，但不確定這是否可行。任何人都可以提供幫助嗎？

#include <stdio.h> 

#define begin_amount 2000 

int main(void) { 
    int debit, credit, current_date, debit_sum, credit_sum, option; //initialize variables for withdrawing and depositing 
    int new_date = 1; 
    int x = 3; 
    printf("what option do you want?\n"); 
    scanf("%d", &option); 

    printf("Deposit\n"); 
    printf("Withdrawl\n"); 
    printf("Print Statement\n"); 
    printf("Interest\n"); 

    //deposits 
    printf("Please enter todays date?\n"); //ask the user for today's date 
    scanf("%d", &current_date); 

    printf("how much do you want to credit to your account?\n"); //ask them to input how much they want to deposit 
    scanf("%d", &credit); 

    printf("Your new balance is %d\n", begin_amount+credit); //print their new balance 

    //Withdrawls 
    printf("Please enter todays date?\n"); //askt he user to enter today's date 
    scanf("%d", &current_date); 

    printf("how much do you want to debit to from account?\n"); //ask them how much they want to withdraw 
    scanf("%d", &debit); 

    printf("Your new balance is %d\n", begin_amount-debit); //print their new balance 

    //counting amount of withdrawls and deposits 
    printf("Please enter today's date?\n"); //ask the user to enter today's date 
    scanf("%d", &current_date); 

    return 0; 
} 

Answer 1

那麼我建議所有的選項創建功能，但如果你只是想要一個簡單的程序，然後只需用內部開關循環while循環。 即

while (true) { scanf("%d",&option); switch(option) { case 1: //deposit break; } }; 

在哪裏你可以把每個選項作爲自己的情況。