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#include<stdio.h>
#include<dos.h>
#include<stdlib.h>
#include<string.h>
#define MAX 100 /*设置最大可求的整数数目*/
#define N atoi(argv[1]) /*将命令行得到的字符转化为整型值*/
#define max(a,b) (a<b)?b:a /*定义求两个数的最大值宏*/
void main(int argc,char *argv[])
{
int i,j;
int s[MAX];
if(argc<2){ /*若没有参数*/
printf("error: No command line./n");
printf("You must input the length that you want./n");
printf("example: max 5/n");
exit(1);
}
if(argc>3){ /*若参数超过数目*/
printf("error: Too many paterners!/n");
printf("The exact style: max N/n");
exit(1);
}
if(argc==3&&!strcmp(argv[2],"sound")){/*如果用户写了可选参数sound*/
sound(1000);delay(3000);nosound();
sound(800);delay(3000);nosound();
}
printf("Please input numbers:/n");
for(i=0;i<N;i++)
scanf("%d",&s[i]);
for(j=0;j<N;j++)
s[j+1]=max(s[j],s[j+1]);
printf("The max number is %d./n",s[N-1]);
printf("/nEND");
}
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