Compilare: user.cpp: In function ‘int dfs(int, int, int)’: user.cpp:26: warning: comparison between signed and unsigned integer expressions user.cpp:23: warning: unused variable ‘poz’ user.cpp: In function ‘int main()’: user.cpp:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int dfs(int, int, int)’: user.cpp:36: warning: control reaches end of non-void function