Populating an array with unique random integers

[bennyboy]

I am trying to populate an array with random but unique integers for later use in a minesweeper game. I am not very familiar with rand and srand.

Here's an example from what I have been trying:

using namespace std;

#include <iostream>
#include <time.h>
#define noofmines 5

int randarray[noofmines];
char grid[5][5];

int mineposition()

{
	int n;
	srand(time(NULL));
	for (n=0; n<noofmines; n++)
	{
		
	randarray[n]= rand() % noofmines+1;
	cout<<randarray[n];
	getchar();
	
	}
	return 0;

}

This populates randarray with 5 random integers ranging from 1 - 5. However they are not UNIQUE. How can I fix this?

[ResidentBiscuit]

Read this. This discusses a couple of widely used ways to achieve this:
http://stackoverflow.com/questions/1608181/unique-random-numbers-in-an-integer-array-in-the-c-programming-language