- #include<stdio.h>
 - int main()
 - {
 - int char_num=0,int_num=0,space_num=0,other_num=0;
 - char ch;
 - while((ch=getchar())!='\n')
 - {
 - if(ch<='z'&&ch>='a'||ch<='Z'&&ch>='A')
 - {
 - char_num++;
 - }
 - else if(ch<='9'&&ch>='0')
 - {
 - int_num++;
 - }
 - else if(ch==' ')
 - {
 - space_num++;
 - }
 - else
 - {
 - other_num++;
 - }
 - }
 - printf("字母个数:%d\n",char_num);
 - printf("数字个数:%d\n",int_num);
 - printf("空格个数:%d\n",space_num);
 - printf("其他个数:%d\n",other_num);
 - }
 
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