C語言

1. 結構體陣列、

   1. 定義結構體陣列

      1. 單獨定義、

         1. struct a
            {
            	int m;
            	int	d;
            	int y;
            };
            struct b
            {
            	int xuhao;
            	char ming[];
            	int xingbie;
            	int nianling;
            	char dizhi;
            	struct a rqi;//結構體套結構體、
            };
            
            int main()
            
            {
            	struct b c[5];//單獨定義
            

      2. 定義結構時定義

         1. struct a
            {
            	int m;
            	int	d;
            	int y;
            };
            struct b
            {
            	int xuhao;
            	char ming[50];
            	int xingbie;
            	int nianling;
            	char dizhi;
            	struct a rqi;//結構體套結構體、
            }d[5];//全域性定義、
            
            
             
            

      3. 定義時初始化、

         1. 定義時每個元素使用{}，間隔

         2. struct b c[5] = {
            		{41,"姓名",1, 23,34},
            		{45,"姓名",1, 25,31},
            		{46,"姓名",1, 20,32},
            	};
            
            

         3. struct b c[5] = {
            		{41,"姓名",1, 23,34},
            		{41,"姓名",1, 20,34},
            		{41,"姓名",1, 27,34},
            	};
            
            	c[1].nianling++;
            	printf("nianling=%d\n", c[1].nianling);
             
            

      4. 、

2. 結構體指標、

   1. 結構體變數的指標、指向該結構體變數所佔的記憶體段的起始地址、

   2. 也可以指向結構體陣列中的元素、

      1. struct b d;
            	struct b* c;
            	c = &d;
            
            	d.nianling = 29;
            	(*c).nianling = 40;
            	c->nianling = 31;
            
            	printf("ninliang=%d\n", c->nianling);
         

   3. -> 指向結構體成員運算子、

3. 用指向結構體的指標做函式引數、