int ch ; e*D,2>o
ch=getche() ; KV{
if((ch>='a') && (ch<='z')) #f=41d%
printf("%c is a lowercase letter\n" ,ch); W Kd:O)J
else if ((ch>='A') && (ch<='Z')) jM{5nRQ
print(" %c is a uppercase letter\n" ,ch); 4|eI_u{_
else if((ch>'0')&&(ch<'9') @Y9tkJIt
printf(" %c is a number character between 0 and 9\n" ,ch) ; 5wvh
@Sc\
else 9Z 6
printf("%c is...") |w_l~xYV)
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外面再加个循环就行了