Name Guessing

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main()
{
    system("Title ***Name Guessing***");
    system("color 0A");
    int i, j, k, l, n;
    char ch, grid1[5][10], grid2[20][10], name[20];
    strcpy(grid1[0], "AFKPUZ");
    strcpy(grid1[1], "BGLQV.");
    strcpy(grid1[2], "CHMRW-");
    strcpy(grid1[3], "DINSX(");
    strcpy(grid1[4], "EJOTY)");

    printf("\n\t****Welcome, we are going to guess your name, please co-operate****\n\n");
    while(1){
        printf("Please enter the containing column number of your name's spelling's letters one by one from next table:\n\n");
        printf("Column No.%c\t1\t2\t3\t4\t5\n\n\t", 26);
        for(i = 0; i < 7; i++){
            for(j = 0; j < 5; j++){
                printf("\t%c", grid1[j][i]);
            }
            printf("\n\n\t");
        }
        printf("\tWhen your input ends, Enter NULL (press Ctrl+Z)\n\n\t\t");
        k = 0;
        while(scanf("%d", &i) != EOF){
            strcpy(grid2[k], grid1[i-1]);
            k++;
            printf("\t\t");
        }

        system("color 0E");
        printf("\n\tYes!!! You have almost done.........\n\nNow, Please enter the containing column number of your name's spelling's letters one by one from the printed line:\n\n");
        printf("\nColumn No.%c\t1\t2\t3\t4\t5\t6\n\n\t", 26);
        l = 0;
        for(i = 0; i < k; i++){
            for(j = 0; j < 7; j++){
                printf("\t%c", grid2[i][j]);
            }
            //printf("enter the column No.%c", 26);
            scanf("%d", &n);
            name[l] = grid2[i][n-1];
            l++;
            printf("\n\n\t");
        }
        name[l] = '\0';
        printf("\tI guess this is your name: %s\n", name);
        printf("\n\n\t\tDo you want to continue?\n\t\t\tTo continue press 1\n\t\t\tTo terminate press any other key\n\t\t\t\t\t\t\t");
        scanf("%d", &i);
        if(i == 1){
            system("cls");
            system("color 0A");
            printf("Let's go for another time...............\n\n");
        }
        else{
            system("color 0F");
            printf("Thank you! See you later.\nExiting................\n");
            break;
        }
    }
    return 0;
}