Compilare: user.cpp: In function ‘int main()’: user.cpp:20:49: warning: variable ‘lin’ set but not used [-Wunused-but-set-variable] int n,m,i,j,st,dr,mid,nr=0,k,l,c,nrdist,last=0,lin,col,foo; ^ user.cpp:20:53: warning: variable ‘col’ set but not used [-Wunused-but-set-variable] int n,m,i,j,st,dr,mid,nr=0,k,l,c,nrdist,last=0,lin,col,foo; ^ user.cpp:20:57: warning: variable ‘foo’ set but not used [-Wunused-but-set-variable] int n,m,i,j,st,dr,mid,nr=0,k,l,c,nrdist,last=0,lin,col,foo; ^