Compilare: user.cpp: In function ‘void read()’: user.cpp:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:53: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:75: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:97: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:119: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result