#include<stdio.h>main(){ int s,a=0,b=0,c=0,d=0; scanf("%2d",&s); if((s>=65&&s<=91)||(s>=97&&s<=123)); a=a+1; else if(s=""); b=b+1; else if(s<=1&&s>=9); c=c+1; else d=d+1; printf(%d%d%d%d,abcd);}帮忙看看哪错了,谢谢!!!!!