简单实现helloworld.c的命令行参数

/*command argument test */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc,char *argv[])
{
int i;
  for (i=0;i<argc;i++)
  {
	if((strcmp(argv[i],"hello")==0))

{ printf("hello test done\n");
}

if((strcmp(argv[i],"test")==0))
{ printf("hello test 2\n");
}
if((strcmp(argv[i],"--help")==0)||(strcmp(argv[i],"-h")==0))
 {
 printf("usages: hello hello\n usages: hello test\n");
 printf("usages: hello --help  show this help info\n");
 printf("usages: hello -h show this help info\n");
 }
 
  }
return 0;
}

　编译后运行，结果如下图所示：