Thread: function syntax error

this is a prog to search an array of random numbers. i'm trying to use recursion, but something is wrong with the function f_search. can anyone help? thanks again

Code:

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

//functions
int f_search(int, int, int);

main()
{
	int const array_size=400;
	int array[array_size], holder, key;
//get key
	cout<<"enter an int from 1 to "<<array_size*2<<endl;
	cin>>key;

//seed
	srand(time(0));

//load aray
	for (int i=0; i<array_size; i++)
	{	array[i]=1+rand() %array_size*2;
	}
	
//sort array
	for (int i=0; i<array_size; i++)
	{	for (int x=0; x<array_size; x++)
		{	if (array[x]<array[x-1] && x!=0)
			{	holder=array[x];
				array[x]=array[x-1];
				array[x-1]=holder;
			}}}

//display array
	for (int i=0; i<array_size; i++)
	{	cout<<array[i]<<" ";
	}

//search
	f_search(int array[], int array_size, int key);//error: expressino syntax

	return(0);
}

int f_search(int a, int size, int key)
{
	int location=4;//still working on, 4 is dummy value
	if (size/2 == key)
	{	cout<<"the number you picked ("<<key<<") was found in element "<<location;
		return 1;
	}
	else
		f_search(int a, int size/2, int key);//error: expressino syntax
}

:blush: i didn't put those types in there i swear it, it must have my evil computer. :abscond:

thanks

ok, i made the noted changes (thanks guys). but now i get this error:

c:\mprog\search.cpp:
Turbo Incremental Link 5.00 Copyright (c) 1997, 2000 Borland
Error: Unresolved external 'f_search(int *, int, int)' referenced from C:\BORLAND\BCC55\BIN\SEARCH.OBJ

it looks like it built, but couldn't compile? here's the code just incase

Code:

#include <iostream>
#include <ctime>
#include <cstdlib>

using namespace std;

//functions
int f_search(int *, int, int);

main()
{
	int const array_size=400;
	int array[array_size], holder, key;
//get key
	cout<<"enter an int from 1 to "<<array_size*2<<endl;
	cin>>key;

//seed
	srand(time(0));

//load aray
	for (int i=0; i<array_size; i++)
	{	array[i]=1+rand() %array_size*2;
	}
	
//sort array
	for (int i=0; i<array_size; i++)
	{	for (int x=0; x<array_size; x++)
		{	if (array[x]<array[x-1] && x!=0)
			{	holder=array[x];
				array[x]=array[x-1];
				array[x-1]=holder;
			}}}

//display array
	for (int i=0; i<array_size; i++)
	{	cout<<array[i]<<" ";
	}

//search
	f_search(array, array_size, key);//error: expressino syntax

	return(0);
}

int f_search(int a, int size, int key)
{
	int location=4;//still working on, 4 is dummy value
	if (size/2 == key)
	{	cout<<"the number you picked ("<<key<<") was found in element "<<location;
		return 1;
	}
	else
		return f_search(a, size/2, key);//error: expressino syntax

got it, thanks again