Compilare: user.cpp: In function ‘void back()’: user.cpp:43:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] else if(bun(i)) ^ user.cpp: In function ‘int main()’: user.cpp:52:11: warning: unused variable ‘w’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:52:13: warning: unused variable ‘w2’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:52:16: warning: unused variable ‘k’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:52:18: warning: unused variable ‘mini’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:52:23: warning: unused variable ‘q’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:52:25: warning: unused variable ‘q2’ [-Wunused-variable] float w,w2,k,mini,q,q2,s=0; ^ user.cpp:53:13: warning: unused variable ‘poz’ [-Wunused-variable] int i,j,poz; ^