C语言指针和传参基本的实验

 

----------------------------------------------------------------------------------------------------------#include <stdio.h>#include <unistd.h>#include <errno.h>#include <stdlib.h>#include <string.h>int main(void){ int i; int *pi; printf("int *pi creat------\n"); printf ("pi = %d\n",pi);// printf ("*pi = %d\n",*pi); printf("after pi = &i------\n"); pi = &i;   printf ("i = %d\n",i); printf ("pi = %d\n",pi); printf ("*pi = %d\n",*pi); int **ppi; printf("int **ppi creat------\n"); printf ("ppi = %d\n",ppi);// printf ("*ppi = %d\n",*ppi);// printf ("**ppi = %d\n",**ppi);   ppi = π printf("after ppi = &pi------\n"); printf ("ppi = %d\n",ppi); printf ("*ppi = %d\n",*ppi); printf ("**ppi = %d\n",**ppi); return 0;}

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