Compilare: user.cpp: In function ‘void det(int)’: user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp:11: warning: unused variable ‘j’ user.cpp: In function ‘void det2(int)’: user.cpp:35: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result