Why does my C program go through the second if statement when the condition is not met? Why is the value of col equal to 10? [duplicate]

I am trying to learn C after starting with assembly language and I am making a 6x6 connect 4 game using arrays and I am just getting started and testing the functions as I go to make sure they work. Any guidance would be appreciated. Also, I'm trying to do this using only the stdio.h

Here is a sample

Player 1, choose a column (1-6): j

You're in main now! 106
Player 2, choose a column (1-6): 
You're in main now! 10
Invalid move. Try again.
Choose a column (1-6): ^C

I have no idea why it goes through the second if statement and prints the player 2 prompt before calling the valid_input function during the loop. Furthermore, why does it not ask the user for a second input if its going thought that if statement? Why is col equal to 10 after I give it a value that isn't 10?

#include <stdio.h>
#define true 1
#define false 0

//////////////////////////
// check if move is valid
//////////////////////////

int valid_move(int row_0[], int col)
{
  while ((col != 49 || col != 50 || col != 51 || col != 52 || col != 53 || col != 54) && row_0[col] == 0)
  {

printf("\nInvalid move. Try again.");
printf("\nChoose a column (1-6): ");
char col;
scanf("%c", &col);
col = (int)col;
printf("\nYoure in valid move now! %i", col); //a peek at if it saves variabel properly
 }

 return 0;
}

////////////////////
// get next open row
////////////////////

 int open(int row_0[], int row_1[], int row_2[], int row_3[], int row_4[], int row_5[], int col)
{

  int r;

  while (true)
  {
    if (row_5[col] == 0)
    {
       r = 5;
    }
    if (row_4[col] == 0)
    {
      r = 4;
    }
    if (row_3[col] == 0)
    {
      r = 3;
    }
    if (row_2[col] == 0)
    {
      r = 2;
    }
    if (row_1[col] == 0)
    {
      r = 1;
    }
    if (row_0[col] == 0)
    {
      r = 0;
    }
  }
  return r;

}

int main(void)
{

  // Initialize Gameboard

  int row_0[] = {0, 0, 0, 0, 0, 0};
  int row_1[] = {0, 0, 0, 0, 0, 0};
  int row_2[] = {0, 0, 0, 0, 0, 0};
  int row_3[] = {0, 0, 0, 0, 0, 0};
  int row_4[] = {0, 0, 0, 0, 0, 0};
  int row_5[] = {0, 0, 0, 0, 0, 0};


  // Welcome Message
  printf("=====================     Connect 4     =====================\n");

  int game_over = false;

  int turn = 0;
  int rows = 6;
  char col;

  while (game_over == false)
  {

    if (turn == 0)   // Ask for Player 1 input
    {

      printf("\nPlayer 1, choose a column (1-6): ");
      scanf("%c", &col);

      col = (int)col;

      printf("\nYou're in main now! %i", col);
      valid_move(row_0, col);
    }

    if (turn == 1)  // Ask for Player 2 input
    {

      printf("\nPlayer 2, choose a column (1-6): ");
      scanf("%c", &col);

      col = (int)col;

      printf("\nYou're in main now! %i", col);
      valid_move(row_0, col);
    }

    turn++;
    turn = turn % 2;


  }
  return 0;
}