Eroare de compilare: user.cpp: In function ‘void mul(int*, int*)’: user.cpp:30: error: ‘memset’ was not declared in this scope user.cpp:37: error: ‘memcpy’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:59: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘int’ user.cpp:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:49: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result