终端清屏 C/shell

	#include <>
	int system(const char *string);
使用方法	system("clear"); system("date");

#include<stdio.h>
#include<stdlib.h>

int system(const char *string);
int main(void)
{
    system("clear");
    system("date");
    printf("This is my first program!\n");
    system("sleep 2\n");

    return 0;
}

[root@localhost program.c]# gcc test1.c -Wall -o test1                ^C
[root@localhost program.c]# ./test1                          
Sat Jun 21 20:17:10 CST 2014
This is my first program!（2s后）
[root@localhost program.c]#

2  shell终端的清屏指令有：
# printf "\033c"
#clear

#tput clear