Compilare: user.cpp: In function ‘int main()’: user.cpp:8: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘long int’ user.cpp:10: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘int’ user.cpp:8: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘FILE* fopen(const char*, const char*)’, declared with attribute warn_unused_result user.cpp:8: warning: ‘n’ is used uninitialized in this function user.cpp:26: warning: ‘out’ is used uninitialized in this function user.cpp:10: warning: ‘v’ may be used uninitialized in this function user.cpp:12: warning: ‘j’ may be used uninitialized in this function