C++ 如何将一个integer与一个数组进行比较

我正在用C做注册码，基本上可以输入多个账户. 现在，我想要的是通过登录函数访问该特定帐户，其中(Pass == LogIn Pass).

尽管我的代码已经可以访问该特定帐户(请参阅Inquiry()函数)，但我的问题是，当我try 使用该特定帐户的密码确认LogIn_Pass时，即使用户输入正确，它也总是返回"帐户未找到".

我已经判断过Inquiry()是否有效，并且它基于LogIn()中输入的账号.

我的问题是LogIn_Pass无法与从Registry输入的密码进行比较(accounts[i][4]).

请参阅登录功能."欢迎"声明永远不会发表.我如何才能成功比较它们？

我是C新手，我被难住了.请帮忙.

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

char accounts[100][4][100]; 
int num_accounts = 0, confirm_pass, login_pass; 
int acc_num;
int login_pass;

// Function declarations
void Registration();
void Inquiry();
void LogIn();

//Main Function
int main() {
    int n;
    
    
    Registration();
    LogIn();
    
    while (1) {
        printf("\n1. Inquiry\n2. Exit\n");
        scanf("%d", &n);
        
        switch (n) {
            case 1: 
                Inquiry();
                break;
            case 2:
                printf("Exiting...\n");
                return 0;
            default:
                printf("Invalid choice!\n");
                break;
        }
    }
    return 0;
}

//Registration Function
void Registration() {
    printf("Enter the number of accounts to register: ");
    scanf("%d", &num_accounts);
    
    
    for (int i = 0; i < num_accounts; i++) {
        getchar();
        printf("\nRegistration for Account %d\n", i + 1);
        printf("____________________________\n");
        printf("1. Account name: ");
        fgets(accounts[i][0], sizeof(accounts[i][0]), stdin);
        printf("2. Account number: ");
        fgets(accounts[i][1], sizeof(accounts[i][1]), stdin);
        printf("3. Address: ");
        fgets(accounts[i][2], sizeof(accounts[i][2]), stdin);
        printf("4. Mobile number: ");
        fgets(accounts[i][3], sizeof(accounts[i][3]), stdin);
        
        // Prompt for password creation
        do {
            printf("\n\nCreate Password: ");
            fgets(accounts[i][4], sizeof(accounts[i][4]), stdin);
            printf("Confirm Password: ");
             fgets(accounts[i][5], sizeof(accounts[i][5]), stdin);
            
            if (strcmp(accounts[i][4], accounts[i][5]) == 0) {
                break;
            } else {
                printf("Password does not match!\n");
            }
        } while (1);
    }
}

//LogIn Function
void LogIn() {
    
   
    printf("\nLog In: \n");
    printf("____________________________\n");
    printf("Account number: ");
    scanf("%d", &acc_num);
    printf("Password: ");
    scanf("%d", &login_pass);
    
    // Find the account with the matching account number
    int found = 0;
    for (int i = 0; i < num_accounts; i++) {
         if (acc_num == atoi(accounts[i][1]) && login_pass == atoi(accounts[i][4])) {
            printf("\nWelcome!\n");
            found = 1;
            break;
        }
    }
    
    if (!found) {
        printf("\nAccount not found!\n");
    }
}

//Inquiry Function
void Inquiry() {
    for (int i = 0; i < num_accounts; i++) {
        if (acc_num == atoi(accounts[i][1])) {
             printf("Account name: %s", accounts[i][0]);
            printf("Account number: %s", accounts[i][1]);
            printf("Address: %s", accounts[i][2]);
            printf("Mobile number: %s", accounts[i][3]);
            break;
        }
    }
    
}