Compilare: user.cpp: In function ‘int det_max(int, int, int&)’: user.cpp:47:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void eliminare(int, int)’: user.cpp:54:11: warning: unused variable ‘is’ [-Wunused-variable] char is=a[i][j]; ^ user.cpp: In function ‘int main()’: user.cpp:75:13: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] char is,c; ^