/in/foo.c: In function 'main':
/in/foo.c:4:16: error: expected identifier or '(' before numeric constant
    4 |         int x, 1<x<100;
      |                ^
/in/foo.c:5:9: error: 'cin' undeclared (first use in this function)
    5 |         cin>>x;
      |         ^~~
/in/foo.c:5:9: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:7:9: error: expected ',' or ';' before 'if'
    7 |         if(x%2!=0)
      |         ^~
/in/foo.c:9:22: error: expected ';' before 'else'
    9 |                 i=i+1
      |                      ^
      |                      ;
   10 |         else
      |         ~~~~          
/in/foo.c:12:22: error: expected ';' before 'if'
   12 |                 i=i+1
      |                      ^
      |                      ;
   13 |         if(x=1)
      |         ~~