int ch ; VqcBwJ!?p
ch=getche() ; /[\6oa
if((ch>='a') && (ch<='z')) g8%MOhg
printf("%c is a lowercase letter\n" ,ch); >X;xIyRL
else if ((ch>='A') && (ch<='Z')) JfI aOhKs]
print(" %c is a uppercase letter\n" ,ch); C/mg46
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else if((ch>'0')&&(ch<'9') R<0Fy =z
printf(" %c is a number character between 0 and 9\n" ,ch) ; +90u!r^v
else MC4284A5
printf("%c is...") ^7i^ \w0
5Z*
b(R
外面再加个循环就行了