Compilare: user.cpp: In function ‘int main()’: user.cpp:45: warning: unused variable ‘i’ user.cpp:45: warning: unused variable ‘j’ user.cpp:49: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:50: 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 user.cpp: In function ‘int minimum(int, int, int)’: user.cpp:13: warning: control reaches end of non-void function