统计单词个数

#include<stdio.h>int get_word_num(char* buf){int n = 0;   int tag = 1; char* p = buf;for(;*p!=0;p++){if(*p==' ' && tag==0) tag=1;if(tag==1 && *p!=' ') { n++; tag=0; }}return n;}int main(){char buf[1000];fgets(buf,1000,stdin);printf("%d\n", get_word_num(buf));return 0;}