Compilare: user.cpp: In function ‘int fill(int, int, int)’: user.cpp:45:42: warning: ‘revdir’ may be used uninitialized in this function [-Wmaybe-uninitialized] int d, dif = inf, p_ln = inf, p_col, revdir; ^ user.cpp: In function ‘int main()’: user.cpp:138:32: warning: ‘p_col’ may be used uninitialized in this function [-Wmaybe-uninitialized] witness[rezln][rezcol] = true; ^ user.cpp:138:32: warning: ‘p_ln’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:120:28: warning: ‘rezln’ may be used uninitialized in this function [-Wmaybe-uninitialized] witness[rezln][rezcol] = true; ^ user.cpp:120:28: warning: ‘rezcol’ may be used uninitialized in this function [-Wmaybe-uninitialized] /tmp/cc4BZJC5.o: In function `main': user.cpp:(.text.startup+0x80): warning: the `gets' function is dangerous and should not be used.