Compilare: user.cpp: In function ‘int main()’: user.cpp:11:10: warning: unused variable ‘m’ [-Wunused-variable] int n, m, c, i, vf, nr, a; ^ user.cpp:11:23: warning: unused variable ‘nr’ [-Wunused-variable] int n, m, c, i, vf, nr, a; ^ user.cpp:12:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &c); ^