C语言统计字符串字符类型数量

#include<stdio.h> int main() { char ch[20],*p; int upper=0,lower=0,digit=0,space=0,other=0; printf("请输入一行文字：\n"); gets(ch); p=ch; while(*p!='\0') { if(*p>='A'&&*p<='Z') upper++; else if(*p>='a'&&*p<='z') lower++; else if(*p>='0'&&*p<='9') digit++; else if(*p==' ') space++; else other++; p++; } printf("大写字母：%d\n",upper); printf("小写字母：%d\n",lower); printf("数字字符：%d\n",digit); printf("空格：%d\n",space); printf("其他字符：%d\n",other); return 0; }