Eroare de compilare: user.cpp: In constructor ‘BigInt::BigInt(int)’: user.cpp:107:35: error: ‘memset’ was not declared in this scope memset(digits, 0, sizeof(digits)); ^ user.cpp: In constructor ‘BigInt::BigInt(char*)’: user.cpp:117:18: error: ‘strlen’ was not declared in this scope size = strlen(s); ^ user.cpp: In function ‘int main()’: user.cpp:161:18: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%lld", &n); ^ user.cpp:158:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("petrecere.in", "r", stdin); ^ user.cpp:159:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("petrecere.out", "w", stdout); ^ user.cpp:161:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^