Compilare: user.cpp: In function ‘int rezolva(char, int&)’: user.cpp:22: warning: unused variable ‘z’ user.cpp: In function ‘int main()’: user.cpp:67: warning: comparison between signed and unsigned integer expressions user.cpp:116: warning: unknown conversion type character 0xa in format user.cpp:62: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:63: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int rezolva(char, int&)’: user.cpp:59: warning: control reaches end of non-void function