Eroare de compilare: user.cpp: In member function ‘void BigInt::multiply(BigInt&)’: user.cpp:93:37: error: ‘strlen’ was not declared in this scope result.size = strlen(result.digits); ^ user.cpp: In constructor ‘BigInt::BigInt(int)’: user.cpp:106:35: error: ‘memset’ was not declared in this scope memset(digits, 0, sizeof(digits)); ^ user.cpp: In constructor ‘BigInt::BigInt(char*)’: user.cpp:116:18: error: ‘strlen’ was not declared in this scope size = strlen(s); ^ user.cpp: In function ‘int main()’: user.cpp:138:17: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[1005]’ [-Wformat=] scanf("%s", &ns); ^ user.cpp:139:17: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[1005]’ [-Wformat=] scanf("%s", &cs); ^ user.cpp:135:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sosete.in", "r", stdin); ^ user.cpp:136:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sosete.out", "w", stdout); ^ user.cpp:138:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &ns); ^ user.cpp:139:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", &cs); ^