Compilare: user.cpp: In function ‘int main()’: user.cpp:32:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &k); ^ user.cpp:34:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp: In function ‘int kthelement(int, int, int)’: user.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] } ^