Compilare: user.cpp: In function ‘void ve(int, int)’: user.cpp:43:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(lnou>=1&&lnou<=n&&cnou<=m&&cnou>=1) ^ user.cpp:36:13: warning: unused variable ‘ln’ [-Wunused-variable] int k=0,ln=0,cn=0; ^ user.cpp:36:18: warning: unused variable ‘cn’ [-Wunused-variable] int k=0,ln=0,cn=0; ^ user.cpp: In function ‘void ve3()’: user.cpp:96:13: warning: unused variable ‘nr’ [-Wunused-variable] int l,c,nr=1; ^ user.cpp: In function ‘int main()’: user.cpp:191:13: warning: unused variable ‘vf’ [-Wunused-variable] int vf=0; ^