请高手帮忙加下注释！输入一段字符串 找出字符串中的 最长单词
#include<stdio.h>#include<string.h>
int main()
{ int alphabetic(char);
int longest(char[]);
int i;
char line[100];
printf("input the line:\n");
gets(line);
printf("The longest word is:");
for(i=longest(line);alphabetic(line[i]);i++)
{ printf("%c",line[i]);}
printf("\n");
return 0;
}
int alphabetic(char c)
{
if((c>='a'&&c<='z')||(c>='A'&&c<='Z'))
{return 1;}
else
{return 0;}
}
int longest(char string[])
{ int len=0,i,length=0,flag=1,place=0,point;
for(i=0;i<=strlen(string);i++)
{ if(alphabetic(string[i]))
if(flag)
{point=i;
flag=0;
}
else
{len++;}
else
{ flag=1;
if(len>=length)
{ length=len;
place=point;
len=0;
}
}
}
return place;
}
