Compilare: user.cpp: In function ‘void det(int)’: user.cpp:24: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:23: warning: unused variable ‘i’ user.cpp: In function ‘int main()’: user.cpp:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result