/in/foo.c: In function 'main':
/in/foo.c:17:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if (str[i]=='d' && str[n-i-1]=='b' || str[i]=='p' && str[n-i-1]=='q' || str[i]=='b' && str[n-i-1]=='d' || str[i]=='q' && str[n-i-1]=='p') continue;
                 ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/in/foo.c:17:97: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if (str[i]=='d' && str[n-i-1]=='b' || str[i]=='p' && str[n-i-1]=='q' || str[i]=='b' && str[n-i-1]=='d' || str[i]=='q' && str[n-i-1]=='p') continue;
                                                                                     ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/in/foo.c:17:131: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if (str[i]=='d' && str[n-i-1]=='b' || str[i]=='p' && str[n-i-1]=='q' || str[i]=='b' && str[n-i-1]=='d' || str[i]=='q' && str[n-i-1]=='p') continue;
                                                                                                                       ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~