shariar-friend's call-structure

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

#define debug 00

typedef struct {
    char name[80];
    char account_no[9];
    double balance;
}BankAccount;

void lowestBalance(BankAccount ara[], int size)
{
    int i, id = 0;
    double lowest = ara[0].balance;
    for(i = 0; i < size; i++){
        if(ara[i].balance < lowest){
            lowest = ara[i].balance;
            id = i;
        }
    }
    printf("id: %s\tlowest balance: %0.2lf\n", ara[id].account_no, lowest);
}

int main()
{
    int n = 3;
    BankAccount ara[n];

    int i;
    for(i = 0; i < n; i++){
        printf("Enter name: ");
        scanf(" %[^\n]", ara[i].name);

        printf("Enter account no (8 digit without space): ");
        scanf("%s", ara[i].account_no);
        ara[i].account_no[9] = '\0';

        printf("Enter balance: ");
        scanf("%lf", &ara[i].balance);
    }

    if(debug) for(i = 0; i < n; i++){
        printf("Name: %s\nAccount No: %s\nBalance: %0.2lf\n", ara[i].name, ara[i].account_no, ara[i].balance);
    }

    printf("Enter your 8 digit account number to search for balance: ");

    char account_number[9];
    int flag = 1;
    scanf("%s", account_number);
    account_number[8] = '\0';

    for(i = 0; i < n; i++){
        if(strcmp(account_number, ara[i].account_no) == 0){
            printf("%Your account balance is %0.2lf BDT\n", ara[i].balance);
            flag = 0;
            break;
        }
    }

    if(flag) printf("Account Not Found\n");

    lowestBalance(ara, n);



    return 0;
}