Thread: My number guessing game

Hey people.

I am just starting to actually program a bit more rather than just read about c++ and have come up with a very basic number guessing game. I am having problems with writing effective functions and would be interested to know if a more experienced programmer would structure this problem differently.

Also is there always a way to make a program object oriented no matter how simple it is. So for example if i were to make this OO would I declare a class GuessGame and just put the funcions and variables inside the class.
Should I focus on procedural Programming first for a while or just get my hands dirty with classes from the moment i understand them .

Any constructive feedback would be great . Thanks

Code:

#include<iostream>
#include<stdlib.h>		// for random numbers
#include<time.h>
using namespace std;

int ValidGuess(void);	
int RandNum(void);
void CompareNumbers(int NumToGuess,int Guess);

int main(void)
{	
	srand((unsigned)time(NULL));

	
	int NumToGuess=RandNum();
	int Guess=ValidGuess();	
    CompareNumbers(NumToGuess,Guess);

	return(0);
}

// Makes sure the user enters a valid guess between 1-5
int ValidGuess(void)		
{
	
	int number;
	do
	{
		char input[10];
		

		cout << "Enter a number" << endl;
		cin.getline(input,9); //this will allow for a 9 digit number,which is bigger than an int anyways, so this should be fine
		number = atoi(input); //Converts a digit string into a number
				
	}
	while((number<1)||(number>5));

	return number;
}

// This function produces the random number that the user has to guess
int RandNum()
{


	int RndNum=rand()%5+1;
	
	return RndNum;
}

// This function compares the number produced by the computer and the number you guessed
void CompareNumbers(int NumToGuess,int Guess)
{
	if(NumToGuess==Guess)
	{
		cout << "Ye Ha" << endl;
		cout << "You guessed " << NumToGuess << endl;
		cout << "Which is correct!" << endl;
	}

	else 
	{
		cout << "Unlucky Sunshine" << endl;
		cout << "The number you were looking for was " << NumToGuess << endl;
	}
}