浙大版《C语言程序设计（第3版）》题目集 练习3-4 统计字符

#include<stdio.h>
int main()
{
    char str[10];
    int i;
    int letter=0;
    int blank=0;
    int digit=0;
    int other=0;
    for(i=0;i<10;i++)
    {
       scanf("%c",&str[i]);
       if(str[i]>='a'&&str[i]<='z'||str[i]>='A'&&str[i]<='Z') letter++;
       else if(str[i]==' '||str[i]=='\n') blank++;
       else if(str[i]>='0'&&str[i]<='9') digit++;
       else other++;
    }
    printf("letter = %d, blank = %d, digit = %d, other = %d\n",letter,blank,digit,other);
    return 0;
}