下列代码的输出结果是( )。int a,b,c;a=10;b=20; a=b;b=c;c=a;printf(“a=%d,b=%d,c=%d”,a,b,c);
· a=10,b=20,c=30 ;
·a=10;b=20;
·a=b;b=c;c=a;
· a=20 b=30 c=10;
·a=20 b=30 c=10;