int ch ; DU(X,hDBF
ch=getche() ; nWd:>Ur
if((ch>='a') && (ch<='z')) rC~_:uXtE
printf("%c is a lowercase letter\n" ,ch); p+!f(H
else if ((ch>='A') && (ch<='Z')) 9B&
}7kk
print(" %c is a uppercase letter\n" ,ch); &(GopWR`e
else if((ch>'0')&&(ch<'9') yM W'-\
printf(" %c is a number character between 0 and 9\n" ,ch) ; *?s/Ho &'
else ;%M2x5
printf("%c is...") L/c4"f|.*v
}`?7\\6
外面再加个循环就行了