#includevoid main(){char a[b];int i,m=n=k=0;for(i=0;i='A'&&a[i]<='Z')m++;if(a[i]>='a'&&a[i]<='z')n++;if(a[i]<='9'&&a[i]>='0')k++;}printf(大写小写字母与数字的个数分别是:%d,%d,%d",m,n,k);}
