Compilare: user.cpp: In function ‘int main()’: user.cpp:43:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(!viz[v]) ^ user.cpp:56:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(!viz[v]) ^ user.cpp:69:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(!viz[v]) ^ user.cpp:82:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(!viz[v]) ^ user.cpp:14:14: warning: unused variable ‘j’ [-Wunused-variable] {int start,i,j,n,m; ^