Compilare: user.cpp: In function ‘int main()’: user.cpp:27:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:30:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&h[i][j]); ^ user.cpp:45:37: warning: ‘col’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(dist[lin+dlin[i]][col+dcol[i]]==dist[lin][col]-1&&dist[lin+dlin[i]][col+dcol[i]]<dist[lin][col]){ ^ user.cpp:45:24: warning: ‘lin’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(dist[lin+dlin[i]][col+dcol[i]]==dist[lin][col]-1&&dist[lin+dlin[i]][col+dcol[i]]<dist[lin][col]){ ^