I am trying to produce a random walk solution but I get some strange results.
Here's the code :
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <time.h>
int main (int argc, const char * argv[]) {
// insert code here...
char myArray[10][10];
char letters[26] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'};
int counter1 = 0; //row
int counter2 = 0; //column
int direction; //variable to hold the direction of the next move
int counter = 0;
srand( (unsigned)time(NULL) );
//fill myArray with dots
for (int theCounter = 0; theCounter < 10; theCounter++)
{
for (int innerCounter = 0; innerCounter < 10; innerCounter++) {
myArray[theCounter][innerCounter] = '.';
}
}
myArray[0][0] = letters[counter];
while (counter < 26) {
//decide direction
direction = rand() % 4; //picks a random direction (0 - up, 1 - down, 2 - left, 3 - right)
//up case
if (direction == 0) //bounders
{
if (counter1 == 0) {
continue;
}
else if (myArray[counter1 - 1][counter2] == '.')
{
counter++;
counter1--;
myArray[counter1][counter2] == letters[counter];
}//end if
}//outer if
//down case
if (direction == 1) //bounders
{
if (counter1 > 9)
{
continue;
}
else {
counter++;
counter1++;
myArray[counter1][counter2] = letters[counter];
}//end if
}//end outer if
//left case
if (direction == 2)
{
if (counter2 == 0)
{
continue;
}
else if (myArray[counter1][counter2 - 1] == '.')
{
counter++;
counter2--;
myArray[counter1][counter2] == letters[counter];
}//end if
}//end outer if
//right case
if (direction == 3) //bounders
{
if (counter1 > 8)
{
continue;
}
else if (myArray[counter1][counter2 + 1] == '.')
{
counter++;
counter2++;
myArray[counter1][counter2] == letters[counter];
}//end inner if
}//end outer if
}//end while
//print the grid
for (int theCounter = 0; theCounter < 10; theCounter++)
{
for (int innerCounter = 0; innerCounter < 10; innerCounter++) {
printf("%c", myArray[theCounter][innerCounter]);
}
printf("\n");
}
}One strange thing that I found duting debugging is that when direction = 3 the command after the counter2++ expression that assigns a value to an 2 dimensional array is never executed.
Why is this happening?
Thank you.
