摘要：最常见的一种：View Code 1 #include <stdio.h>2 3 int main(void) 4 {5 printf("Hello world!\n");6 return 0;7 }C系统调用：View Code 1 #include <unistd.h>2 3 int main(void) 4 {5 write(1,"Hello world!\n",14);6 return 0;7 }利用syscall直接调用：View Code 1 #include <unistd.h>2 #include &l 阅读全文