foo.c:1:1: warning: data definition has no type or storage class
 a= eval(input())
 ^
foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
foo.c:1:4: warning: implicit declaration of function 'eval' [-Wimplicit-function-declaration]
 a= eval(input())
    ^~~~
foo.c:1:9: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
 a= eval(input())
         ^~~~~
foo.c:1:4: error: initializer element is not constant
 a= eval(input())
    ^~~~
foo.c:2:1: error: expected ',' or ';' before 'count'
 count = 0
 ^~~~~

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