Compilare: user.cpp: In function ‘int flux()’: user.cpp:78: warning: unused variable ‘qr’ user.cpp: In function ‘int cupleaza(int)’: user.cpp:133: warning: comparison between signed and unsigned integer expressions user.cpp:144: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:161: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:162: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:164: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:166: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:168: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result