src.c:2:3: error: expected expression before 'int'
a=int(input(''))
^
src.c:2:13: error: empty character constant
a=int(input(''))
^
src.c:3:13: error: empty character constant
b=int(input(''))
^
src.c:4:13: error: empty character constant
c=int(input(''))
^