/in/foo.c:1:1: warning: data definition has no type or storage class
    1 | sides = input().split(',')
      | ^~~~~
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'sides' [-Wimplicit-int]
/in/foo.c:1:9: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
    1 | sides = input().split(',')
      |         ^~~~~
/in/foo.c:1:16: error: request for member 'split' in something not a structure or union
    1 | sides = input().split(',')
      |                ^
/in/foo.c:2:1: error: expected ',' or ';' before 'a'
    2 | a, b, c = float(sides[0]), float(sides[1]), float(sides[2])
      | ^