如何使用C语言实现copy拷贝的功能

如何使用C语言实现copy拷贝的功能

注：本程序实现的是两个文件在同一目录下

#include
int main(void){
    char buf[100] = {};
    int size = 0;
    FILE *p_file = fopen("b.out","rb");
    FILE *p_dest = fopen("c.out","wb");
    if(!p_file){
        return 0;
    }
    p_dest = fopen("c.out","wb");
    if(!p_file){
        fclose(p_file);
        p_file = NULL;
        return 0;
    }
    while(size = fread(buf,sizeof(char),100,p_file)){
        fwrite(buf,sizeof(char),size,p_dest);
    }
    fclose(p_dest);
    p_dest = NULL;
    fclose(p_file);
    p_file = NULL;
    return 0;
}