Compilare: user.cpp: In function ‘int main()’: user.cpp:21:13: warning: unused variable ‘min’ [-Wunused-variable] int i,n,min,max,cnt=1,k=0,cntm=0; ^ user.cpp:21:27: warning: unused variable ‘k’ [-Wunused-variable] int i,n,min,max,cnt=1,k=0,cntm=0; ^ user.cpp:22:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:24:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&v[i].a,&v[i].b); ^