库函数调用 --综合实例（文件copy）

#include 

/*****************
*name:file_cp.c
*author:QG
*time:2015-05-12
*description:
********************/



int main(int arge,char **argv)
{
    FILE *fp_in;
    FILE *fp_out;
    char buf[1024];
    int count_read = 0;
    int count_write = 0;
    //1.open source file
    fp_in = fopen(argv[1],"r+");
    //2.open destination file
    fp_out = fopen(argv[2],"w+");

    //read and write
    while((count_read = fread(buf,1,1023,fp_in)) > 0)
    {
        printf("read %d types !\n",count_read);
        buf[1023] = '\0';
        count_write = fwrite(buf,1,count_read,fp_out);
        printf("write %d types!\n",count_write);
    }
    close(fp_in);
    close(fp_out);


    return 0;
}