Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:34:20: warning: pointer to a function used in arithmetic [-Wpointer-arith] dfs[t[0][poz]],been[t[0][poz]]=1; ^ user.cpp:34:20: warning: value computed is not used [-Wunused-value] dfs[t[0][poz]],been[t[0][poz]]=1; ~~~~~~~~~~~~~^ user.cpp:34:20: warning: left operand of comma operator has no effect [-Wunused-value] user.cpp: In function ‘void ways()’: user.cpp:14:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&x,&y); ^ user.cpp: In function ‘int main()’: user.cpp:43:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^