C++

Forum

 
Issue in a simple program

itayz (9)
I try to get a random character to be in a map I defined, it doesn't let me;
problem in the 'random', it says "Expression must have constant value"
Any help?
How do I get 'o' to be in a random place at the map within the borders?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
 
#include "stdafx.h"
#include <iostream>
#include "windows.h"

using namespace std;

char map[10][20] = {
    "###################",
    "#X                #",
    "#                 #",
    "#                 #",
    "#                 #",
    "#                 #",
    "#                 #",
    "#                 #",
    "###################"
};


bool game_running = true;
int x=1;
int y=1;

int randomY=rand() % 10;
int randomX=rand() % 20;
map[randomY][randomX] = 'o';

int main()
{
    while(game_running == true){
        system("cls");
        for(int display=0; display<10; display++){
            cout << map[display] << endl;
        }
		system("PAUSE>NUL");

		if (GetAsyncKeyState(VK_DOWN)){
			int y2 = y+1;
			if (map[y2][x]== ' ')
			{
				map[y][x] = ' ';
				y++;
					map[y][x]= 'X';
			}

		}
			if (GetAsyncKeyState(VK_UP)){
			int y2 = y-1;
			if (map[y2][x]== ' ')
			{
				map[y][x] = ' ';
				y--;
					map[y][x]= 'X';

			}

		}
			if (GetAsyncKeyState(VK_RIGHT)){
				int x2 = x+1;
			if (map[y][x2] == ' ')
			{
				map[y][x] = ' ';
				x++;
				map[y][x]= 'X';
			}

			}
			if (GetAsyncKeyState(VK_LEFT)){
				int x2 = x-1;
			if (map[y][x2] == ' ')
			{
				map[y][x] = ' ';
				x--;
				map[y][x]= 'X';
			}

			}

			



	}
    return 0;
}
coder777 (8443)
put at least line 26 inside the body of main()
Zhuge (4664)
You can't put a statement like line 26 in the global scope; when would it be executed? Try putting it at the start of main() instead.
itayz (9)
So I put it on the inside, but now it's always in the same spot.

any ideas?
coder777 (8443)
put 24,25,26 right after line 31
Topic archived. No new replies allowed.