C语言实例1—统计单词个数

我使用的DEVC++编译器，新建get_words_num.c文件

#include<stdio.h>

int main()
{
   
	char cString[100];
	
	int iIndex,iWord=1;
	char cBlank;
	gets(cString);
	
	if(cString[0]=='\0')
	{
   
		printf("There is no words!\n");
	}
	else if(cString[0]==' ')
	{
   
		printf("first words is a blank char!\n");
	}
	else
	{
   
		for (iIndex=0;cString[iIndex]!='\0';iIndex++)
		{
   
			cBlank=cString[iIndex];
			if(cBlank==' '){
   
				iWord++;
			}
			
		}
		printf("%d\n",iWord);
	}
	return 0 ;
}

运行

I love cats and dags
5

 I love cats and dags
 first words is a blank char!

直接回车

There is no words!