foo.c:1:1: warning: data definition has no type or storage class
    1 | a=int(input())
      | ^
foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
foo.c:1:3: error: expected expression before 'int'
    1 | a=int(input())
      |   ^~~
foo.c:3:1: warning: data definition has no type or storage class
    3 | c=0
      | ^
foo.c:3:1: warning: type defaults to 'int' in declaration of 'c' [-Wimplicit-int]
foo.c:4:1: error: expected ',' or ';' before 'for'
    4 | for i in range(0,a):
      | ^~~

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