c语言 初始化结构体的另一种方法

typedef struct trace_route_state_t {
 
	unsigned int a;
	unsigned int b;
	unsigned int c;
	unsigned int d;
	unsigned int e;
	unsigned int f;
	unsigned int g;
} trace_route_state_t;

trace_route_state_t trace_route_state = {
	.a = 3,
	.b = 5000,
	.c = 38,
	.d = 0,
	.e = 30,
	.f = 0
};