C / C++ / MFC

The question was-[![Go to the link][1]][1]


  [1]: https://i.stack.imgur.com/KtjQm.png
My code-

    #include <stdio.h>
    #include<stdlib.h>
    #include<math.h>
    void main()
    {
        int r,c,i,j,t=0;
        scanf("%d",&r);
        scanf("%d",&c);
        int a[r][c];
        int counter=0;
        for(i=0;i<r;i++) //taking the input row wise
        {
            for(j=0;j<c;j++)
            {
                scanf("%d",&a[i][j]);
            }
            printf("\n");
        }
        for(i=1;i<(r-1);i++) //Taking the inner elements
        {
            for(j=1;j<(c-1);j++)
            {
                t=t+1;
                int count=0;
                if(a[i][j-1]==0)
                count+=1;
                if(a[i][j+1]==0)
                count+=1;
                if(a[i-1][j]==0)
                count+=1;
                if(a[i+1][j]==0)
                count+=1;
                if(count==3)
                printf("%d\n",a[i][j]);
                else
                counter+=1;
                 
            }
        }
        if (counter ==t) //Checking whether the counter equals the inner elements
        {
            printf("No peninsular elements");
        }
    }

My logic is to take each inner element and then find its surrounding element. If the surrounding element is 0, then I am increasing my count by 1 otherwise I am increasing counter by 1. If my count equals 3 at the end of the loop, then I am printing that element. 

I am getting a private test case failed error when I am running it on my university site. Is there any flaw in my logic that I can rectify to overcome this error. 

hello i have a project of creating a 2D game with the c but i do not know how to start anyone can help me please
the game name is block puzzle