int ch ; Rv=DI&K%n
ch=getche() ; K&*iw`
if((ch>='a') && (ch<='z')) &J_Z~^
printf("%c is a lowercase letter\n" ,ch); vu=me?m?(
else if ((ch>='A') && (ch<='Z')) _w 5RK(
print(" %c is a uppercase letter\n" ,ch); g%ubvu2t]
else if((ch>'0')&&(ch<'9') Ab/j(xr=
printf(" %c is a number character between 0 and 9\n" ,ch) ; W+_ R hJ
else {9L 5Q
printf("%c is...") CdY8#+"
]<1HM"D
外面再加个循环就行了