Question

c语言答案

编程在一个已知的字符串中查找最长单词假定字符串中指含字母和空格，空格用来分隔不同单词

Answer 1

#include<stdio.h>
#include<string.h>
int letter(char c)
{
if(c>='a' && c<='z'|| c>='A' && c<='Z')
{
return(1);
}
else
{
return(0);
}
}
int longest(char string[])
{
int point,flag=1,len=0,lenth=0,place=0,i;
for(i=0;i<=strlen(string);i++)
{
if(letter(string[i]))
{
if(flag)
{
point=i;
flag=0;
}
else
{
len++;
}
}
else
{
flag=1;
if(len>lenth)
{
lenth=len;
place=point;
len=0;
}
}
}
return(place);
}
void main()
{
int i;
char str[100];
printf("input one line\n");
gets(str);
printf("the longest words is:");
for(i=longest(str);letter(str[i]);i++)
{
printf("%c",str[i]);
}
printf("\n");
}
你看看吧，就这个了

Answer 2

int MaxWord(char *str)
{
int i=0;
int MaxWordPos=0;
int MaxWordLen=0;
int curwordlen=0;
int curwordpos=0;
while(*str!='\0')
{
if (*str==32)
{
curwordpos=i-curwordlen;

if (MaxWordLen<curwordlen)
{
MaxWordLen=curwordlen;
MaxWordPos=curwordpos;
}
curwordlen=0;
}
else
{
curwordlen++;
}
str++;
i++;
}
curwordpos=i-curwordlen;
if (MaxWordLen<curwordlen)
{
MaxWordLen=curwordlen;
MaxWordPos=curwordpos;
}
return (MaxWordPos);
}

void PrintWord(char *str,int pos)
{

str+=pos;
while ((*str!=32)&&(*str!='\0'))
{
printf("%c",*str);
str++;
}
}

int main()
{

char str[100];
printf("input one line\n:");
gets(str);
printf("the longest words is:");
PrintWord(str,MaxWord(str));
printf("\n");
return (0);
}

Answer 3

a