Compilare: user.cpp: In function ‘void read()’: user.cpp:29:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",c[i] + 1); ^ user.cpp: In function ‘int main()’: user.cpp:99:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("base3.in","r",stdin); ^ user.cpp:100:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("base3.out","w",stdout); ^