Compilare: user.cpp:4: warning: non-local variable ‘<anonymous struct> c [1000000]’ uses anonymous type user.cpp:4: warning: non-local variable ‘<anonymous struct> v’ uses anonymous type user.cpp: In function ‘int main()’: user.cpp:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:13: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result