Compilare: user.cpp: In function ‘int main()’: user.cpp:71:28: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] scanf("%llf", &v[i]); ^ user.cpp:73:31: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] scanf("%llf", &pond[i]); ^ user.cpp:75:31: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] scanf("%llf", &corr[i]); ^ user.cpp:97:41: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] printf("%.3llf ", ini.data[1][i]); ^ user.cpp:66:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecu.in","r",stdin); ^ user.cpp:67:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecu.out","w",stdout); ^ user.cpp:69:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:71:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llf", &v[i]); ^ user.cpp:73:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llf", &pond[i]); ^ user.cpp:75:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llf", &corr[i]); ^