subsecvente.cpp: In function 'int verif(int)': subsecvente.cpp:15: warning: comparison between signed and unsigned integer expressions subsecvente.cpp:20: warning: comparison between signed and unsigned integer expressions subsecvente.cpp:24: warning: comparison between signed and unsigned integer expressions subsecvente.cpp: In function 'int main()': subsecvente.cpp:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result subsecvente.cpp:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result subsecvente.cpp:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result