Chapter1 Counting 总结！

 

nc: 字符数

nw: 单词数

ns: 空格数

nl: 换行数

nt: tab数

 

#include<stdio.h>

#define OUT 0
#define IN 1

int main(){
    int c, nc, nw, ns, nl, nt, state;
    nc = nw = ns = nl = nt = 0;
    state = OUT;
    while((c = getchar()) != EOF){
        nc++;
        if(c == ' ')
            ns++;
        else if(c == '\t')
            nt++;
        else if(c == '\n')
            nl++;

        if(c == ' ' || c == '\t' || c == '\n')
            state = OUT;
        else if(state == OUT)
            state = IN, ++nw;
    }
    printf("characters: %d, spaces: %d, words: %d, newlines: %d, tabs: %d\n",
           nc, ns, nw, nl, nt);
}