Compilare: user.cpp: In function ‘void GeneratePrimeNrs(std::vector<int>*, int)’: user.cpp:32:6: warning: unused variable ‘idx’ [-Wunused-variable] int idx = 0; ^ user.cpp: In function ‘int main()’: user.cpp:62:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<l.size(); j++) ^ user.cpp:72:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<primeNumbers.size(); j++) ^ user.cpp:88:21: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%lld ", 1); ^ user.cpp:90:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<l.size(); i++) ^ user.cpp:39:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(IN_FILE_NAME, "r", stdin); ^ user.cpp:40:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(OUT_FILE_NAME, "w", stdout); ^ user.cpp:43:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tests); ^ user.cpp:49:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:56:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu", &nr); ^