/in/foo.cc: In function 'int main()':
/in/foo.cc:18:15: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(t1=='(' && t2==')' || t1=='[' && t2==']' || t1=='{' && t2=='}')
       ~~~~~~~~^~~~~~~~~~
/in/foo.cc:18:59: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(t1=='(' && t2==')' || t1=='[' && t2==']' || t1=='{' && t2=='}')
                                                   ~~~~~~~~^~~~~~~~~~