Compilare: user.cpp:37: warning: ISO C++ forbids declaration of ‘main’ with no type user.cpp: In function ‘int main()’: user.cpp:40: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘long int*’ user.cpp:40: warning: format ‘%d’ expects type ‘int*’, but argument 4 has type ‘long int*’ user.cpp:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result