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

int main(void)
{
    char a[200];
    char b[70],c[70],d[70];
    int i,j,k,l=0;
    printf("Please input your short message:\n");
    gets(a);
    l=sizeof(a)/sizeof(a[0]);
    if(0<l<=70)
    {
        for(j=0;j<l;j++)
        {
            b[j]=a[j];
        }
    }
    if(70<l<=140)
    {
        for(j=0,k=70;k<l;j++,k++)
        {
            c[j]=a[k];
        }
    }
    if(140<l<=200)
    {
        for(j=0,k=140;k<l;j++,k++)
        {
            d[j]=a[k];
        }
    }
    printf("send:\n");
    if(0<l<=70)
    {
        printf("1.");
        puts(b);
    }
    if(70<l<=140)
    {
        printf("\n");
        printf("2.");
        puts(c);
    }
    if(140<l<=200)
    {
        printf("\n");
        printf("3.");
        puts(d);
    }
   
    system("pause");
    return 0;
}

作业要求：
手机可以收发的短信都以70字为限，当用户编写超过70字的短信发送时，手机系统将信息自动分割为70字（不满70也算一条）一条的短信，请模拟该功能编写程序


运行效果：

Please input your short message:

I know you can do it, but you failed at least. Now you have worked for three years and earn much money, and buy a house.

send:
1. I know you can do it, but you failed at least. Now you have worked for
2. three years and earn much money, and buy a house.

请按任意键继续_