int ch ; L6;'V5Mg72
ch=getche() ; ? STO#<a
if((ch>='a') && (ch<='z')) '#eT
printf("%c is a lowercase letter\n" ,ch); WK@<#
else if ((ch>='A') && (ch<='Z')) /L5:/Z
print(" %c is a uppercase letter\n" ,ch); OdNcuiLa
else if((ch>'0')&&(ch<'9') e&Q
w\Ze
printf(" %c is a number character between 0 and 9\n" ,ch) ; m{~L Fhhd1
else G;/l[mvh,
printf("%c is...") mEkYT
,'9R/7%s
外面再加个循环就行了