fread与fwrite读取数字或数组

#include <stdio.h>  int main()  {      FILE* pFile;      int num1=20,num2=21;      pFile = fopen("myfile.bin" , "wb");     fwrite(&num1 , sizeof(int) , 1 ,pFile);    fwrite(&num2 ,  sizeof(int) ,1 , pFile);     fclose(pFile);    int n1,n2;    pFile = fopen("myfile.bin" , "r");      fread(&n1 ,  sizeof(int) , 1 ,pFile);    fread(&n2 ,  sizeof(int) ,1 , pFile);    printf("%d %d\n", n1,n2);    fclose(pFile);    return 0;}  

#include <stdio.h>  int main()  {    int i;    FILE* pFile;      int arr[5];    for(i=0; i<5; i++)    {        arr[i] = i;    }    pFile = fopen("myfile.bin" , "wb");     fwrite(arr, sizeof(int), 5, pFile);    fclose(pFile);    int recvarr[5];    pFile = fopen("myfile.bin" , "r");      fread(recvarr,  sizeof(int), 5, pFile);    for(i=0; i<5; i++)    {        printf("%d ",recvarr[i]);    }      fclose(pFile);    return 0;}