Compilare: user.cpp: In function ‘int cmp(elem, elem)’: user.cpp:19: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:24: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int cmp2(elem, elem)’: user.cpp:41: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:46: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:56: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int cmp2(elem, elem)’: user.cpp:51: warning: control reaches end of non-void function user.cpp: In function ‘int cmp(elem, elem)’: user.cpp:29: warning: control reaches end of non-void function