Compilare: user.cpp: In function ‘int main()’: user.cpp:9:20: warning: unused variable ‘k’ [-Wunused-variable] int n,m,x,y,ok,k,i,j,lin,col,s; ^ user.cpp:37:5: warning: ‘col’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(col!=m&&lin!=n) ^ user.cpp:37:14: warning: ‘lin’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(col!=m&&lin!=n) ^