fread() fwrite()執行個體

#include <stdio.h>#include <stdlib.h>int main(){    FILE *fp;    float num=11.22334;    fp=fopen("E:\\Recent Files\\test.txt","wb");    if (NULL==fp)    {       printf ("cannt open\n");       exit (1);              }    fwrite(&num,sizeof(float),1,fp);//此時文本裡面的是地址     fclose(fp);//這裡注意 每次對文本操作一次都要進行關閉     FILE *fp2=fopen("E:\\Recent Files\\test.txt","rb");    float num2;    if (NULL==fp)    {       printf ("cannt open\n");       exit (1);              }    fread(&num2,sizeof(float),1,fp2);    printf ("%lf\n",num2);    fclose(fp2);    system("pause");    return 0;}