We are given a project that could GAME OF NIM with this problem
there only have 3 rows and the first row will have 3 and second will have 5 and third will have 7 and it will be played by two player (HUMAN) and my problem here in our code is it never declared a winner. CAN ANYONE HELP PLEASE.

Code:
#include <stdio.h>
        main()
        {
        int row1[3]={1,1,1};
        int row2[5]={1,1,1,1,1};
        int row3[7]={1,1,1,1,1,1,1};
        int j; int i=1;
        int item; int l;
        int row; int player=1;
        int column; int sum;



        while (i<sum)
        {
        printf("\nPlayer %d's turn! \n\n",player);
        player++;
        if(player == 3)
        player = player - 2;


        printf("\tRow 1: %d %d %d\n",row1[0],row1[1],row1[2]);
        printf("\tRow 2: %d %d %d %d %d\n", row2[0],row2[1],row2[2],row2[3],row2[4]);
        printf("\tRow 3: %d %d %d %d %d %d %d\n",row3[0],row3[1],row3[2],row3[3],row3[4],row3[5],row3[6]);

        printf("\nEnter row number: ");
        scanf("%d", &row);
        if(row > 3 || row < 1)
        {
        printf("Error! Enter number from 1-3!\n");

        while (row > 3|| row < 1)
        {printf("Enter row number: ");
        scanf("%d", &row);}
        }
        printf("Enter number of items to remove: ");
        scanf("%d", &item);

        switch(row)
        {
        case 1:
        {
        if(item>3||item<1)
        printf("Error! Enter number from 1-3!\n");
        while(item>3||item<1)
        {printf("Enter number of items to remove:");
        scanf("%d", &item);}
        }
        break;

        case 2:
        {
        if(item > 5|| item < 1)
        printf("Error! Enter number from 1-5!\n");
        while(item > 5 || item < 1)
        {printf("Enter number of items to remove:");
        scanf("%d", &item);}
        }

        break;
        case 3:
        {
        if(item > 7 || item < 1)
        printf("Error! Enter number from 1-7!\n");
        while(item > 7 || item < 1)
        {printf("Enter number of items to remove: ");
        scanf("%d", &item);}
        }
        break;
        };
        for(j=1;j<=item;j++)
        {
        printf("Enter column(%d) number: ",j);
        scanf("%d",&column);
        };
        sum= i+i+i+i+i+i+i+i+i+i+i+i+i+i+i;

        }

        return 0;
        }