Compilare: user.cpp: In function ‘int main()’: user.cpp:13: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘long int*’ user.cpp:20: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:31: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:58: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:11: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:13: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result /tmp/ccEE8JqA.o: In function `main': user.cpp:(.text+0x6f): warning: the `gets' function is dangerous and should not be used.