src.c:1:1: error: missing terminating " character
x=input("输入三个数，以逗号分隔')
^
src.c:2:1: error: 'a' undeclared here (not in a function)
a,b,c=map(int, x.split(','))
^
src.c:2:3: error: 'b' undeclared here (not in a function)
a,b,c=map(int, x.split(','))
^
src.c:2:5: error: 'c' undeclared here (not in a function)
a,b,c=map(int, x.split(','))
^
src.c:2:11: error: expected expression before 'int'
a,b,c=map(int, x.split(','))
^
src.c:3:1: error: expected ')' before 's'
s=a b c
^