argc與**argv理解

//argv_test.c

#include<stdio.h>

int main(int argc,char **argv)//指向字符串的指針
{
 unsigned  int a;
 unsigned short uchar[2];
 uchar[0] = *argv[1];
 uchar[1] = *argv[2];

 a= atoi(argv[1]);
 printf("a = %d *argv[1] %c *argv[2] %c argc=\n",a,*argv[1],*argv[2],argc);
 return 0;
}

gcc -o argv_test argv_test.c
./argv_test 1 2
打印輸出 a=1 *argv[1]=1 *argv[2]=2;argc=3;
argc爲輸入參數個數，**argv中爲輸入的字符串內容，**argv是一個指向字符串的指針，其大小沒有固定，可以換成另一種格式*argv[].