Compilare: user.cpp: In function ‘int main()’: user.cpp:15:10: warning: statement has no effect [-Wunused-value] for(i;i<n;i++){ ^ user.cpp:14:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld%lld",&c,&n,&k); ^ user.cpp:16:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&v[i+start]); ^ user.cpp:14:40: warning: ‘fin’ is used uninitialized in this function [-Wuninitialized] fscanf(fin,"%lld%lld%lld",&c,&n,&k); ^ user.cpp:13:21: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] long long c,n,k,i,minim; ^ user.cpp:33:17: warning: ‘fout’ may be used uninitialized in this function [-Wmaybe-uninitialized] fclose(fout); ^