C语言实例第09期：计算字符串中单词的个数

//
// Created by 冲哥 on 2020/9/16.
//实现功能：计算字符串中单词的个数
//

#include "stdio.h"

#define LEN 100

int main(){
    char str[LEN];
    int index;
    char blank;
    int words = 1;

    printf("请输入字符串：\n");
    gets_s(str, LEN);

    if (str[0] == '\0') {
        printf("输入的字符串为空\n");
    } else if (str[0] == ' ') {
        printf("输入的字符串的第一个字符是空格\n");
    } else {
        for (int i = 0; str[i] != '\0'; ++i) {
            blank = str[i];
            if (blank == ' ') {
                words++;
            }
        }
        printf("输入的字符串中有%d个单词\n", words);
    }
}