Compilare: user.cpp: In function ‘void ReadData(char (*)[50], int&, int&)’: user.cpp:31:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<line.size();j++){ ^ user.cpp:27:10: warning: unused variable ‘j’ [-Wunused-variable] int i=1,j; ^ user.cpp: In function ‘void MP()’: user.cpp:79:32: warning: ‘minj’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<min<<" "<<mini<<" "<<minj; ^ user.cpp:79:17: warning: ‘mini’ may be used uninitialized in this function [-Wmaybe-uninitialized] out<<min<<" "<<mini<<" "<<minj; ^