#include<stdio.h>void main(){ int a,b,c,d; a=0,b=0,c=0,d=0; char m; while((m=getchar())!='\n') { if(('a'<=m&&m<='z')||('A'<=m&&m<='Z'))a=a+1; else if(m==' ')b=b+1; else if('0'<=m&&m<='9')c=c+1; else d=d+1; char m; } printf("英文字母的个数是%d\n",a); printf("空格的个数是%d\n",b); printf("数字的个数是%d\n",c); printf("其他字母的个数是%d\n",d);}