Compilare: user.cpp:15:13: warning: multi-character character constant [-Wmultichar] a[x][y]='-1'; ^ user.cpp: In function ‘void fill(int, int, char)’: user.cpp:15:12: warning: overflow in implicit constant conversion [-Woverflow] a[x][y]='-1'; ^ user.cpp: In function ‘int task1()’: user.cpp:55:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void task2()’: user.cpp:96:20: warning: unused variable ‘h2’ [-Wunused-variable] int h1,h2; ^ user.cpp:92:10: warning: ‘cmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] char cmax; ^ user.cpp:124:34: warning: ‘jmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<maxi<<'\n'<<imax<<" "<<jmax<<'\n'<<cmax; ^ user.cpp:124:23: warning: ‘imax’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<maxi<<'\n'<<imax<<" "<<jmax<<'\n'<<cmax; ^