Compilare: user.cpp: In function ‘int main()’: user.cpp:19:23: warning: unused variable ‘a’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:19:25: warning: unused variable ‘b’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:19:27: warning: unused variable ‘curent’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:19:40: warning: unused variable ‘imin’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:19:45: warning: unused variable ‘jmin’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:19:50: warning: unused variable ‘min’ [-Wunused-variable] int n,m,i,j,lx,ly,a,b,curent,nrins,imin,jmin,min; ^ user.cpp:24:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d\n",&n,&m); ^