找最长单词(原版课本).c

C语言实验作业包

#include<string.h>
#include<stdio.h>
int youzimu(char c)
{ if(c>='a'&&c<='z')
     return(1);
   else 
	 return(0);
}
 
int longest(char ch[])
{ int len=0,length=0,flag=1,place=0,point,i;
  for(i=0;i<=strlen(ch);i++)
	  if(youzimu(ch[i]))
		 if(flag)
		 { point=i;
		   flag=0;
		 }
		 else
			len++;
	  else
	  {  flag=1;
	     if(len>=length)
		 { length=len;
		   place=point;
		   len=0;
		 }
	  }
	  return(place);
}

main()
{ int i; 
  char ch[100];
  gets(ch);
  printf("The longest word is:");
  for(i=longest(ch);youzimu(ch[i]);i++)
	  printf("%c",ch[i]);
  printf("\n最长单词的位置为%d\n",longest(ch));
  printf("字符串的长度为%d\n",strlen(ch));
}