Compilare: user.cpp: In function ‘int main()’: user.cpp:24:3: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[j]==')'&&x[j+1]!='*')if(st[k]==1)k--; ^ user.cpp:26:34: warning: value computed is not used [-Wunused-value] if(x[j]==')'&&x[j+1]=='*')st[++k]==2; ^ user.cpp:30:3: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(x[j]==']'&&x[j+1]!='*')if(st[k]==3)k--; ^ user.cpp:33:34: warning: value computed is not used [-Wunused-value] if(x[j]==']'&&x[j+1]=='*')st[++k]==2; ^