例9_7.cpp

c语言书籍&课件&示例代码

#include<stdio.h>
#include<stdlib.h>
void main()
{  double*p;
   p=(double*)malloc(sizeof(double));
   if(p==NULL){printf("malloc error!\n"); exit(0);}
   *p=78.786;
   printf("*p=%f\n",*p);
   free(p);
}