/in/foo.c: In function 'main':
/in/foo.c:13:9: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(x==0&&y!=0||z==0)
     ~~~~^~~~~~
/in/foo.c:38:7: warning: 'T' may be used uninitialized in this function [-Wmaybe-uninitialized]
    sum=sum+T;
    ~~~^~~~~~