Compilare: user.cpp: In function ‘int main()’: user.cpp:11:23: warning: unused variable ‘var’ [-Wunused-variable] long long n,i,min,var,j,k; ^ user.cpp:12:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld",&n); ^ user.cpp:14:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld",&a[i]); ^