Compilare: user.cpp: In function ‘void citeste(unsigned int&)’: user.cpp:15: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:19: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:56: warning: format ‘%lu’ expects type ‘long unsigned int*’, but argument 2 has type ‘unsigned int*’ user.cpp:56: warning: format ‘%lu’ expects type ‘long unsigned int*’, but argument 3 has type ‘unsigned int*’ user.cpp:56: warning: format ‘%lu’ expects type ‘long unsigned int*’, but argument 4 has type ‘unsigned int*’ user.cpp:136: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘unsigned int’ user.cpp:50: warning: unused variable ‘citit’ user.cpp:54: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result 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 ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int stergere(unsigned int)’: user.cpp:47: warning: control reaches end of non-void function