要求编写程序，输入一行字符，统计每个单词的长度

int main()
{
    char string[1000];
    gets(string);
    
    char *head,*last;
    head = last = string;
    while(*head == ' ') ++head;
    
    while(head != NULL){
        last = head;
        head = strchr(head,' ');
        if(head != NULL){
            if(head - last)
                printf("%d ",head - last);
            ++head;
        } else {
            int i=0;
            while(*last != '\0'){
                ++i;
                ++last;
            }
            printf("%d ",i);
        }
        
    }
    
    
    return 0;
}