最简单的方法是按照aplhabetical顺序对字符串中的单词进行排序? 我做了以下代码,但它不适用于较小的单词,它也会打印很多垃圾值。你能告诉我为什么吗?
#include<stdio.h>
#include<string.h>
void main()
{
int i=0,j=0,k=0,l=0,n,wmax=0,tem;
char text[80];
char sort[80];
char temp[20];
struct word // a structure to contain a single word and it's length
{
char text[10];
int length;
}
word[20];
printf("Enter a line of text");
gets(text);
while(text[j]!='\0')
{
if(text[j]==' ')
wmax++;j++;
};
wmax=j;
for(i=0;i<j;i++)
{
if(text[i]==' ')
{
word[k].text[l]='\0';
k++;
l=0;
continue;
}
word[k].text[l]=text[i];
word[k].length=l;
l++;
}
for(n=0;n<wmax;n++){
for(i=0;i<wmax;i++)
{
for(j=0;j<word[i].length;j++)
{
if(word[i].text[j]>word[i+1].text[j])
{
strcpy(temp,word[i].text);
strcpy(word[i].text,word[i+1].text);
strcpy(word[i+1].text,temp);
}
if(word[i].text[j]==word[i+1].text[j])
continue;
if(word[i].text[j]<word[i+1].text[j]);
break;
}
}
}
for(j=0;j<wmax;j++){
puts(word[j].text);
}
答案 0 :(得分:1)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int cmp(const void *a, const void *b){
return strcmp(*(char**)a, *(char**)b);
}
int main(){
char text[80];
char *words[40];
char *word;
int wmax=0, i;
printf("Enter a line of text :");
scanf("%79[^\n]", text);
for(word = strtok(text, " "); word ; word = strtok(NULL, " ")){
words[wmax++] = word;
}
qsort(words, wmax, sizeof(*words), cmp);
for(i=0;i<wmax;++i)
printf("%s\n", words[i]);
return 0;
}