Compilare: user.cpp: In function ‘int main()’: user.cpp:14:15: warning: unused variable ‘j’ [-Wunused-variable] int i,n,m,j,ind=0,k,max=0; ^ user.cpp:14:23: warning: unused variable ‘k’ [-Wunused-variable] int i,n,m,j,ind=0,k,max=0; ^ user.cpp:16:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^