c语言中b.c+=1什么意思

b.c 是结构（之类的）对象b的成员c.b.c+=1; 就是 b.c = b.c +1;例如吵哪：升桥码消腊#includemain(){struct {int c;}b;b.c = 2;printf("before: b.c=%d\n",b.c);b.c+=1; printf("after: b.c=%d\n",b.c);return 0;}输出：before: b.c=2after: b.c=3