/in/foo.cc: In function 'int main()':
/in/foo.cc:20:11: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(sy=ey) {
           ^
/in/foo.cc:46:7: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
   e[i]=t;
   ~~~~^~
/in/foo.cc:34:7: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
   c[i]=t;
   ~~~~^~