int ch ; x/{
ch=getche() ; n,hHh=.Fu
if((ch>='a') && (ch<='z')) t/yGMR=
printf("%c is a lowercase letter\n" ,ch); ]sE~gro
else if ((ch>='A') && (ch<='Z')) H2 5Mx>|d
print(" %c is a uppercase letter\n" ,ch); 5?kJ]:
else if((ch>'0')&&(ch<'9') 7FW!3~3A_
printf(" %c is a number character between 0 and 9\n" ,ch) ; v*7}ux8
else |k$[+53A
printf("%c is...") Aa[p7{e
~b+4rYNxU_
外面再加个循环就行了