结果总是其它是240个，而字母什么的都是0个，我是输入了24

#include "stdafx.h"int _tmain(int argc, _TCHAR* argv[]){int a=0, b=0, c=0, d=0, e=0, p, q; char f[4][80] ;printf("请输入文章:");scanf_s("%s", f);for (p = 0; p <= 2; p++){for (q = 0; q <= 79; q++){if (f[p][q] <= 'Z' && f[p][q] >= 'A')a = a + 1;else{if (f[p][q] <= 'z' && f[p][q] >= 'a')b = b + 1;else{if (f[p][q] <= '9' && f[p][q] >= '0')c = c + 1;else{if (f[p][q] == ' ')d = d + 1;elsee = e + 1;}}}}}printf("\n大写字母有：%d个\n小写字母有：%d个\n数字有：%d个\n空格有：%d个\n其它有：%d个\n总计：240个 谢谢!\n",a,b,c,d,e);return 0;}