Compilare: user.cpp: In function ‘void processA()’: user.cpp:17:24: warning: NULL used in arithmetic [-Wpointer-arith] for(i = 2; a[i] != NULL; i++) ^ user.cpp: In function ‘void processB()’: user.cpp:30:28: warning: NULL used in arithmetic [-Wpointer-arith] for(int i = 1; b[i] != NULL; i++) ^ user.cpp: In function ‘int main()’: user.cpp:47:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in", "r", stdin); ^ user.cpp:48:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out", "w", stdout); ^ user.cpp:49:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s", a + 1, b + 1); ^