Compilare: user.cpp: In function ‘int main()’: user.cpp:65:36: warning: left operand of comma operator has no effect [-Wunused-value] for(i=l1,j=c1;i>=l2,j<=c2;i--,j++) ^ user.cpp:87:36: warning: left operand of comma operator has no effect [-Wunused-value] for(i=l1,j=c1;i>=l2,j>=c2;i--,j--) ^ user.cpp:146:36: warning: left operand of comma operator has no effect [-Wunused-value] for(i=l1,j=c1;i<=l2,j<=c2;i++,j++) ^ user.cpp:168:36: warning: left operand of comma operator has no effect [-Wunused-value] for(i=l1,j=c1;i<=l2,j>=c2;i++,j--) ^ user.cpp:133:13: warning: ‘sens’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(sens==0) ^ user.cpp:10:34: warning: ‘co’ may be used uninitialized in this function [-Wmaybe-uninitialized] int m,n,i,j,a,b,c,d,e,k,l,li,co,sens,l1,c1,l2,c2,k1=0,kg=0,k0=0,kb=0; ^ user.cpp:57:28: warning: ‘li’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x[li][co]==0) ^