自定义类型的嵌套定义

以结构体类型(struct)为例

#include <stdio.h>#include <stdlib.h>struct testa{    int a;    float b;    struct testb    {        int c;    }tb;}ta;int main(void){    int i;    float j;    int k;    scanf("%d",&i);    scanf("%f",&j);    scanf("%d",&k);    ta.a = i;    ta.b = j;    ta.tb.c = k;    printf("\n*********\n\n");    printf("%d\n", ta.a);    printf("%f\n", ta.b);    printf("%d\n", ta.tb.c);    return 0;}

运行结果：