/in/foo.cc: In function 'int read()':
/in/foo.cc:8:13: warning: suggest parentheses around comparison in operand of '|' [-Wparentheses]
     while(ch<'0'|ch>'9'){if(ch=='-')f=-1;ch=getc();}
           ~~^~~~
/in/foo.cc: In function 'void insert(int, int, char*)':
/in/foo.cc:38:20: warning: 'nb' may be used uninitialized in this function [-Wmaybe-uninitialized]
     b[x].siz+=b[y].siz,b[x].nex=b[y].nex;
               ~~~~~^~~
/in/foo.cc:57:15: note: 'nb' was declared here
     int tot=0,nb,st=now;
               ^~