Compilare: user.cpp: In function ‘bool fa()’: user.cpp:16:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<=n;++j) ^ user.cpp: In function ‘int main()’: user.cpp:39:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘short int*’ [-Wformat=] fscanf(f,"%d%d",&n,&k); ^ user.cpp:39:26: 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:43:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x); ^