/in/foo.c: In function 'main':
/in/foo.c:8:6: warning: unused variable 'x' [-Wunused-variable]
  int x,i,sum=1;
      ^
/in/foo.c: In function 'temp':
/in/foo.c:35:10: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(f==0 &&t==1 || f==1 && t==0)
     ~~~~~^~~~~~
/in/foo.c:37:10: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(f==2 &&t==1 || f==1 && t==2)
     ~~~~~^~~~~~
/in/foo.c:39:10: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(f==0 &&t==2 || f==2 && t==0)
     ~~~~~^~~~~~
/in/foo.c:26:6: warning: unused variable 'x' [-Wunused-variable]
  int x,c,i;
      ^