Compilare: user.cpp: In function ‘int getNr(char*)’: user.cpp:9:18: warning: NULL used in arithmetic [-Wpointer-arith] while (*s != NULL) { ^ user.cpp: In function ‘int main()’: user.cpp:40:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("readunare.in", "r", stdin); ^ user.cpp:41:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("readunare.out", "w", stdout); ^ user.cpp:42:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n%s", a, b); ^