Question

C++

Suppose  getAcctNum() returns the account number of a given Account variable.  Write a function that returns a boolean value to find if a given account number appears in an array of Account objects.

Answer 1

Explanation:

Here is the function is_present which takes the array of objects named arr, size of the array and also the account number to be searched inside the array.

using a for loop, the account number is searched, it returns true if it is found.

Else false if it is not found till the last element.

Function required:

bool is_present(Account arr[], int size, string acc_num_to_find)
{
for (int i = 0; i < size; i++) {
  
if(arr[i].getAcctNum()== acc_num_to_find)
return true;
}
  
return false;
}

Sample code to check the function:

#include <iostream>

using namespace std;

class Account
{
private:
  
string accNum;
string name;
double balance;
double interestRate;

public:
  
Account(string a, string n, double b, double i)
{
accNum = a;
name = a;
balance = b;
interestRate = i;
}

string getAcctNum()
{
return accNum;
}
  
  
};

bool is_present(Account arr[], int size, string acc_num_to_find)
{
for (int i = 0; i < size; i++) {
  
if(arr[i].getAcctNum()== acc_num_to_find)
return true;
}
  
return false;
}

int main()
{
Account ob("123", "John", 0, 0);
Account ob2("234", "Smith", 1, 1);
  
Account arr[] = {ob, ob2};
  
  
cout<<is_present(arr, 2, "234");

return 0;
}

Output:

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