Posts by sfuo

Here is a rough example of why you would want to use it.

If you comment out fflush(stdin); then it skips asking for input every second one, but with it you get asked every time.

#include <stdio.h>
#include <stdlib.h>

int main()
{
	int i = 1;
	char input;
	while(1)
	{
		printf("\n\nLoop number %d - input 'Y' or 'y' to stop\n", i);
		fflush(stdin);
		scanf("%c", &input);
		if( input == 'y' || input == 'Y' )
			break;
		i++;
	}

	return 0;
}

You don't need to make them a string you could just use %10 and /10 to figure out the 1s and 10s digit then add those 2 numbers together to check.

Edit: Didn't even read the whole post until after mine and it says right in there how to do it.

You can look over this and see what is going on but as you will notice I commented in most of the stuff it is missing from being complete.

#include <iostream>
using namespace std;

void DisplaySeats( char seats[][4], int rows )
{
	for( int i = 0; i < rows; i++ )
	{
		cout << i+1 << " ";
		for( int c = 0; c < 4; c++ )
			cout << seats[i][c] << " ";
		cout << endl;
	}
	cout << endl;
}

int main()
{
	string input;
	int rows = 7; //amount of rows
	char seats[rows][4]; //holds seat information
	char aRow[] = {'A', 'B', 'C', 'D' }; //only used to assign seats array

	for( int i = 0; i < rows; i++ )
		for( int c = 0; c < 4; c++ )
			seats[i][c] = aRow[c]; //assigns the seats array

	DisplaySeats(seats, rows); //displays the seats

	//start a loop here

	cout << "Please enter your seat (i.e. 4B):" << endl; //include some way to break the loop
	getline(cin, input);

	//come up with better error checking and maybe remove all spaces for cases if someone types "4 B" instead of "4B"
	//does not check if seat is already taken
	if( input.length() < 2 ) //if input is too short (doesnt check if its too long)
	{
		cout << "invalid input" << endl;
		system("PAUSE");
		return 0;
	}

	if(( input[0] < (int)'1' || input[0] > (int)'7' ) || ( input[1] < (int)'A' || input[1] > (int)'D')) //checks if the input is ok …

namespaces are out of date IMO so if you are using them I think you are just making stuff more complex.

Here is what I came up with.

"mystuff.h"

#ifndef MYSTUFF_H
#define MYSTUFF_H

void randomize();

int random( int high, int low = 0);

int getMax( int A[] );

int getMin( int A[] );

int swap( int A[] );

#endif

"mystuff.cpp"

#include <time.h>
#include <stdlib.h>

#include "mystuff.h"

void randomize()
{
	srand(time(NULL));
}

int random( int high, int low )
{
	return rand() % (high-low) + low;
}

int getMax( int A[] )
{
	int max = A[0];
	for( int i = 1; i < 10; i++ )
	{
		if( A[i] > max )
		{
			max = A[i];
		}
	}
	return max;	
}

int getMin( int A[] )
{
	int min = A[0];
	for( int i = 1; i < 10; i++ )
	{
		if( A[i] < min )
		{
			min = A[i];
		}
	}
	return min;	
}

int swap( int A[] )
{
	for( int i = 0; i < 10; i++ )
	{
		int temp = A[i];
		int ran = random(10);
		A[i] = A[ran];
		A[ran] = temp;		
	}
	return A[10];
}

"array.cpp"

#include <iostream>

#include "mystuff.h"

using namespace std;

int main()
{
	//declare variables and set random seed
	int A[10], min, max;
	randomize();
	
	//make random numbers and assign to array
	for(int i = 0; i < 10; i++)
	{
		A[i] = random(100, -100);
	}
	
	//find min and max numbers in array
	min = getMin( A );
	max = getMax( A );
	
	//output array before shuffled
	
	for( int i = 0; i < 10; i++ )
	{
		if( …