C array's values changing randomly - c

Question

Okay so I have been working on a small rouge like game to teach myself c however I cannot figure out why the array's end up changing randomly after initialization. Here is the code I have:
// ConsoleApplication2.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <stdio.h>
#include <conio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
const int x=10;
const int y=10;
int rexit[]={5,5};
int player[]={1,1};
int enemy[]={x,y};
int useless[]={1,1};
/*
int getinput(int len){
char temp[100];
return(atoi(strtok(fgets(temp,len+1,stdin),"\n")));
}
*/
void bad(){
float bob;
float temp[8]={1,1};
temp[1]=player[1]-enemy[1];
temp[2]=player[2]-enemy[2];
bob=pow(temp[1],2)+pow(temp[2],2);
printf("%f\n",bob);
if (sqrt(bob)<=5){
if (abs(player[1]-enemy[1])>abs(player[2]-enemy[2])){
if (player[1]-enemy[1]<0 && enemy[1]-1>=0){
enemy[1]=enemy[1]-1;
}
else if (enemy[1]+1<=x && player[1]-enemy[1]!=0){
enemy[1]=enemy[1]+1;
}
}
else;
if (player[2]-enemy[2]<0 && enemy[2]-1>=0){
enemy[2]=enemy[2]-1;
}
else if (enemy[2]+1<=y && enemy[2]-player[2]!=0){
enemy[2]=enemy[2]+1;
}
}
}
void map() {
int s;
int a;
bad();
printf("%i %i\n",rexit[1],rexit[2]);
printf("+");
for (a=0;a<=x;a++){
printf("-");
}
printf("+\n");
for (s=0;s<=y;s++){
printf("|");
for (a=0;a<=x;a++){
if ((player[1]==rexit[1] && player[2]==rexit[2]) || (player[1]==enemy[1] & player[2]==enemy[2])){
exit(EXIT_SUCCESS);
}
else if (rexit[1]==s && rexit[2]==a){
printf("E");
}
else if (player[1]==s && player[2]==a){
printf("*");
}
else if (enemy[1]==s && enemy[2]==a){
printf("#");
}
else{
printf(".");
}
}
printf("|\n");
}
printf("+");
for (a=0;a<=x;a++){
printf("-");
}
printf("+\n");
}
void move(){
char me=_getch();
int temp=0;
me=toupper(me);
if (me=='W'){ player[1]=player[1]-1; if (player[1]<=0) player[1]=0;}
else if (me=='S'){ player[1]=player[1]+1; if (player[1]>=y) player[1]=y;}
else if (me=='A'){ player[2]=player[2]-1; if (player[2]<=0) player[2]=0;}
else if (me=='D'){ player[2]=player[2]+1; if (player[2]>=x) player[2]=x;}
else {temp=1;}
if (temp==1){
move();}
else{
system("cls");
map();}
}
void circle(char c,int x)
{
int i,j;
for(i=-x;i<x;i++)
{
for(j=-x;j<x;j++)
{
if(i*i+j*j<x*x)
printf("%c",c);
else
printf(" ");
}
printf("\n");
}
}
void main(){
printf("%i %i\n",enemy[1],enemy[2]);
printf("%i %i\n",useless[1],useless[2]);
system("title BioGames");
system("color A"); // the colours are from 1 to 15
map();
while (true){
move();
}
}

Answer 1

You are treating your array indexing as 1-based. Arrays in C are 0-based.
For example, you declare:
int player[]={1,1};
The only valid indices for this array are 0 and 1 (ie player[0] and player[1]).
There is no such thing as player[2] - that is accessing memory outside the array bounds. This is probably why you think your arrays are changing randomly. They are either being affected by out-of-bound writes to other arrays, or you are simply experiencing undefined behaviour.

Answer 2

Your arrays useless and enemy are declared to contain two values each at initialization. Your main is printing array indices 1 and 2. In C, however, array indices start at 0. So you should be printing indices 0 and 1.