HDU ACM 1088 Write a simple HTML Browser

#include<iostream>
using namespace std;

int main()
{
char s[100];
int len,cnt=0;

while(scanf("%s",s)==1)
{
if(!strcmp(s,"<br>"))
{
cnt=0;
putchar('\n');
}
else if(!strcmp(s,"<hr>"))
{
if(cnt)
printf("\n--------------------------------------------------------------------------------\n");
else
printf("--------------------------------------------------------------------------------\n");
cnt=0;
}
else
{
len=strlen(s);
if(!cnt)
{
cnt=len;
printf("%s",s);
}
else if(cnt+len+1>80)
{
cnt=len;
printf("\n%s",s);
}
else
{
cnt+=len+1;
printf(" %s",s);
}
}
}
putchar('\n');
return 0;
}