Compilare: user.cpp: In function ‘void path()’: user.cpp:30:7: warning: unused variable ‘node’ [-Wunused-variable] int node, nodex, poz, next; ^~~~ user.cpp:30:26: warning: unused variable ‘next’ [-Wunused-variable] int node, nodex, poz, next; ^~~~ user.cpp: In function ‘void ways()’: user.cpp:15:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &i, &j); ^ user.cpp:23:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &i, &j); ^ user.cpp: In function ‘int main()’: user.cpp:60:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &n, &m, &s); ^