int main(void) { int number = -1234; printf("number: %d absolute value: %d
", number, abs(number)); return 0; } 函数名: absread, abswirte 功 能: 绝对磁盘扇区读、写数据 用 法: int absread(int drive, int nsects, int sectno, void *buffer); int abswrite(int drive, int nsects, in tsectno, void *buffer); 。。。
