foo.c: In function ‘main’:
foo.c:15:21: error: ‘n’ undeclared (first use in this function); did you mean ‘n1’?
   15 |         scanf("%d",&n);
      |                     ^
      |                     n1
foo.c:15:21: note: each undeclared identifier is reported only once for each function it appears in
foo.c:24:15: error: expected ‘;’ before ‘for’
   24 |         b[0]=x
      |               ^
      |               ;
   25 |         for(count2=1;count2<n2+1;count2++){
      |         ~~~    
foo.c:23:13: warning: unused variable ‘count2’ [-Wunused-variable]
   23 |         int count2;
      |             ^~~~~~
foo.c:22:13: warning: variable ‘b’ set but not used [-Wunused-but-set-variable]
   22 |         int b[n2];
      |             ^

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