Compilare: user.cpp: In function ‘void cit(int&)’: user.cpp:144:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for ( ; Buffer[CharB] < '0' || Buffer[CharB] > '9' ; verf) ; ^ user.cpp:145:5: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] for ( x = 0; Buffer[CharB] >= '0' && Buffer[CharB] <= '9'; verf) x = x * 10 + Buffer[CharB] - 48; ^ user.cpp: In function ‘int main()’: user.cpp:150:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("kinder.in", "r", stdin); ^ user.cpp:151:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("kinder.out", "w", stdout); ^