Compilare: user.cpp: In function ‘int main()’: user.cpp:74:9: warning: unused variable ‘pp’ [-Wunused-variable] int pp=p2[t+1]; ^ user.cpp:33:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n,&k); ^ user.cpp:37:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i].val); ^