Compilare: user.cpp: In function ‘bool OK(int, int, int)’: user.cpp:13:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i+dy[k]>=0 && i+dy[k]<n && j+dx[k]>=0 && j+dx[k]<m && a[i+dy[k]][j+dx[k]]<h)return true; ^ user.cpp:13:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i+dy[k]>=0 && i+dy[k]<n && j+dx[k]>=0 && j+dx[k]<m && a[i+dy[k]][j+dx[k]]<h)return true; ^ user.cpp: In function ‘int main()’: user.cpp:37:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;++i)for(j=0;j<m;++j){ f>>a[i][j]; if(a[i][j]==0) a[i][j]=numaru+1;} ^ user.cpp:37:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;++i)for(j=0;j<m;++j){ f>>a[i][j]; if(a[i][j]==0) a[i][j]=numaru+1;} ^ user.cpp:38:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;++i)for(j=0;j<m;++j)if(a[i][j]==numaru+1 && neighbors(i,j)) Functie2(i,j); ^ user.cpp:38:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;++i)for(j=0;j<m;++j)if(a[i][j]==numaru+1 && neighbors(i,j)) Functie2(i,j); ^