Compilare: user.cpp: In function ‘int main()’: user.cpp:24:56: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] scanf("%d %d", (v + i) -> st, (v + i) -> dr); ^ user.cpp:24:56: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] user.cpp:18:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:21:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:24:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", (v + i) -> st, (v + i) -> dr); ^