foo.c: In function 'main':
foo.c:5:11: error: array size missing in 'a'
     int n,a[],i,j,m=0;
           ^
foo.c:8:7: error: expected expression before ']' token
     a[]={b};
       ^
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ^~~~~~~~~~~~~~
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%f",&b);
  ^~~~~~~~~~~~~~
foo.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&j);
  ^~~~~~~~~~~~~~

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