Tic Tac toe full

#include <stdio.h>

void print (char index[3][3])

{

    printf("\n\n");
    printf(" [%c]\t[%c]\t[%c]\n\n", index[0][0], index[0][1], index[0][2]);
    printf(" [%c]\t[%c]\t[%c]\n\n", index[1][0], index[1][1], index[1][2]);
    printf(" [%c]\t[%c]\t[%c]\n\n", index[2][0], index[2][1], index[2][2]);
    printf("\n\n");

}
int main ()

{
    printf("Input 1st Player name: ");
    char name1[100];
    gets(name1);
    printf("Input 2nd Player name: ");
    char name2[100];
    gets(name2);

    char index [3][3] = {'1','2','3','4','5','6','7','8','9'};
    int i,user=0,win=0,row=0,column=0,input;
    char sign;

    for (i=0; i<9 && win != 1 ;i++)

       {
           print(index);


            if(i==0 || i==2 || i==4 || i==6 || i==8)
            {
                user = 1;
            }
            else
            {
                user = 2;
            }

            if(user==1)
            {
                sign = name1[0];
            }
            else
            {
                sign = name2[0];
            }

            if(user==1)
            {
                puts(name1);

            }
            else
            {
                puts(name2);
            }

                printf("Place your %c in the Box: ",sign);
                scanf("%d", &input);

                switch (input)
                {
                case 1:
                    row = 0;
                    column = 0;
                    break;

                case 2:
                    row = 0;
                    column = 1;
                    break;

                case 3:
                    row = 0;
                    column = 2;
                    break;

                case 4:
                    row = 1;
                    column = 0;
                    break;

                case 5:
                    row = 1;
                    column = 1;
                    break;

                case 6:
                    row = 1;
                    column = 2;
                    break;

                case 7:
                    row = 2;
                    column = 0;
                    break;

                case 8:
                    row = 2;
                    column = 1;
                    break;

                case 9:
                    row = 2;
                    column = 2;
                    break;
                }

            if (index[row][column] == 'X' || index[row][column] == 'O' || input<0 || input>9)
            {
                printf("\nPlayer %d, Place your %c in the Box: ",user,sign);
                scanf("%d", &input);

                switch (input)
                {
                case 1:
                    row = 0;
                    column = 0;
                    break;

                case 2:
                    row = 0;
                    column = 1;
                    break;

                case 3:
                    row = 0;
                    column = 2;
                    break;

                case 4:
                    row = 1;
                    column = 0;
                    break;

                case 5:
                    row = 1;
                    column = 1;
                    break;

                case 6:
                    row = 1;
                    column = 2;
                    break;

                case 7:
                    row = 2;
                    column = 0;
                    break;

                case 8:
                    row = 2;
                    column = 1;
                    break;

                case 9:
                    row = 2;
                    column = 2;
                    break;
                }
            }

            index[row][column] = sign;

            if((index[0][0]==index[1][1] && index[0][0]==index[2][2]) || (index[0][2]==index[1][1] && index[0][2]==index[2][0]))
            {
               win = 1;
            }
            else if ((index[0][0]==index[0][1] && index[0][0]==index[0][2]) || (index[0][0]==index[1][0] && index[0][0]==index[2][0]))
            {
                win = 1;

            }
            else if ((index[2][2]==index[1][2] && index[2][2]==index[0][2]) || (index[2][2]==index[2][1] && index[2][2]==index[2][0]))
            {
                win = 1;
            }
            else if ((index[0][1]==index[1][1] && index[0][1]==index[2][1]) || (index[1][0]==index[1][1] && index[1][0]==index[1][2]))
            {
                win = 1;
            }

        }

    print(index);

    if(win==0)
    {
        printf("The game is Drown\n");
    }
    else
    {
        if(user==1)
        {
            puts(name1);
            printf(" Won the game");
        }
        else
        {
            puts(name2);
            printf("Won the game");
        }
    }


    return 0;

}