Help with Linear search!

[sassy]

Hello!

I'm trying to complete so old homework assignments, and could use some pointers. When my program runs, it spits out both valid and invalid.

Here's the prompt:

Write a program that lets the user enter a charge account number. The program should determine if the number is valid by checking for it in the following list:

5658845 4520125 7895122 8777541 8451277 1302850
8080152 4562555 5552012 5050552 7825877 1250255
1005231 6545231 3852085 7576651 7881200 4581002
The list of numbers above should be initialized in a single-dimensional array. A simple linear search should be used to locate the number entered by the user. If the user enters a number that is in the array, the program should display a message saying that the number is valid. If the user enters a number that is not in the array, the program should display a message indicating that the number is invalid.

Could use a push in the right direction.

Thanks!

  #include <iostream>
using namespace std;

// Function prototype
int search_list(int [], int, int);

//need to add a function to get data from the user

const int num_count = 18; 

// main function

int main()
{
    
// declare variables

	int tests[num_count] = {5658845, 450125, 7895122, 8777541, 8451277,
		1302850, 8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
		1005231, 654231, 3852085, 7576651, 7881200, 4581002};


	double answer;
	answer = 5658845, 450125, 7895122, 8777541, 8451277,
		1302850, 8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
		1005231, 654231, 3852085, 7576651, 7881200, 4581002;
	
	int array_pause,  
	results;
	                   
	results = search_list(tests, num_count, array_pause);

// ask for account number

	cout<<" Enter a valid Charge Account Number "<<endl;
	cin >> results;
	
// if/else result is/ isnot correct 

	if (results != answer)
	{
		cout << "The number entered is Invalid." << endl; 
    }
    
	    else (results == answer);
	    {
	    	cout << "The number entered is valid." << endl; 
	    }
		
	system("pause");
	return 0;
}

// search list function function

int search_list(int list[], int numElems, int value)
{

// declare variables

	int index = 0; 
	int position = -1; 
	bool found = false; 

// statement if num is found or not

	while (index < numElems && !found)
	{                        
		if (list[index] == value) 
		{
			found = true; 
			position = index; 
		}
		index++; 
	}
	return position; 
} 

[Smac89]

Err, you seem to be mixing things up for no reason. You gotta ask yourself which is supposed to happen first, the user enters a number and I search for the number, or I search for a number and the user enters the number I just searched for?

Also this:

double answer;
	answer = 5658845, 450125, 7895122, 8777541, 8451277,
		1302850, 8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
		1005231, 654231, 3852085, 7576651, 7881200, 4581002;

Evaluates to:

double answer = 4581002;

[shamieh]

Get the input, then search the list - not vice versa.