Number Pattern Program in C - 55

/*
Write a program in C for Number Pattern Program
*/

int main()
{
    int i,j,k=1;
    int m[7][7]={0};
    for(i=1;i<=7;i++)
    {
        for(j=1;j<=7;j++)
            if(j==i || 8-i==j)
                m[i-1][j-1]=k;
            if(i<4) k++;
            else --k;

    }
    for(i=0;i<7;i++)
    {
        for(j=0;j<7;j++)
        {
            if(m[i][j]==0)
                printf(" ");
            else
                printf("%d",m[i][j]);
        }
        printf("\n");
    }
    return 0;
}