Compilare: user.cpp: In function ‘int main()’: user.cpp:29: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘short int*’ user.cpp:33: warning: unused variable ‘j’ user.cpp:33: warning: unused variable ‘k’ user.cpp:34: warning: unused variable ‘dat’ user.cpp:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:25: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:38: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result /tmp/ccOra08k.o: In function `main': user.cpp:(.text+0xd8): warning: the `gets' function is dangerous and should not be used.