/in/foo.c: In function 'main':
/in/foo.c:5:10: error: expected ',' or ';' before 'y'
  int x=0 y=0 z=0;
          ^
/in/foo.c:9:16: error: invalid operands to binary & (have 'char *' and 'int')
  scanf("%d%d%d"&x,&y,&z);
        ~~~~~~~~^
/in/foo.c:9:20: error: 'y' undeclared (first use in this function)
  scanf("%d%d%d"&x,&y,&z);
                    ^
/in/foo.c:9:20: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:9:23: error: 'z' undeclared (first use in this function)
  scanf("%d%d%d"&x,&y,&z);
                       ^