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);
}

}