Find a matrix within another matrix?

Question

Given bigger NxN matrix and a smaller MxM matrix print TRUE if the smaller matrix can be found in the bigger matrix else print FALSE

Answer 1

void isSmallInBig()
{
    const int n = 4;
    int big[n][n] = { {11,12,13,14}, {21,22,23,24}, {31,32,33,34}, {41,42,43,44} };

    const int m = 3;
    int small[m][m] = { {21,22,23}, {31,32,33}, {41,42,43} };

    bool matchFound = false;
    bool flag = true;

    for(int r=0; r<n-m+1; r++)
    {
        for(int c=0; c<n-m+1; c++)
        {
            flag = true;
            for(int temp_r=0; temp_r<m; temp_r++)
            {
                for(int temp_c=0; temp_c<m; temp_c++)
                {
                    if(big[r + temp_r][c + temp_c] != small[temp_r][temp_c])
                    {
                        flag = false;
                        break;
                    }
                }
                if(flag==false) break;
            }
            if(flag==true) 
            {
                matchFound = true;
                break;
            }
        }
        if(flag==true) break;
    }

    if( matchFound )
        cout<<"Match found";
    else
        cout<<"Match not found";

}