Compilare: user.cpp: In function ‘int main()’: user.cpp:7:23: warning: unused variable ‘x’ [-Wunused-variable] long long N, P, dif, x, y, i, start, pas, temp; ^ user.cpp:7:26: warning: unused variable ‘y’ [-Wunused-variable] long long N, P, dif, x, y, i, start, pas, temp; ^ user.cpp:7:32: warning: unused variable ‘start’ [-Wunused-variable] long long N, P, dif, x, y, i, start, pas, temp; ^ user.cpp:4:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perioada01.in","r",stdin); ^ user.cpp:5:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("perioada01.out","w",stdout); ^ user.cpp:10:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld ", &N, &P); ^ user.cpp:12:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ", &v[i]); ^