Compilare: user.cpp: In function ‘void fct(int)’: user.cpp:18:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] else if(x[i]=='(') ^ user.cpp:11:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,cp; ^ user.cpp: In function ‘int main()’: user.cpp:50:9: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] f>>x+1; ^ user.cpp:61:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] aux[aux[0]]=x[i]; ^