day11

题目：输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。

#include <stdio.h>

main()

{

int a,b,c,d;

char s;

a = 0;b = 0;c = 0;d = 0;

printf("Please input some characters :");

while( (s = getchar())!= '\n')

{

if((s >= 'a' && s <= 'z')||(s >= 'A' && s <= 'Z'))

a++;

else if(s >= '0' && s <= '9')

b++;

else if( s = ' ' )

c++;

else

d++;

}

printf("all in all:char=%d space=%d digit=%d others=%d\n",a,c,b,d);

return 0;

}