linux c 编程 ------ 程序入口参数，即 main 参数

#include <stdio.h>

int main(int argc, char *argv[])
{
    printf("the program is %s\n", argv[0]);


    int i = argc;
    printf("the num of arg is %d\n", argc);

    for(i=1; i<argc; i++)
    {
        printf("the %dth of arg is %s\n", i, argv[i]);    
    }
    
    return 0;
}