int ch ; |qw0:c=7!
ch=getche() ; z;qDl%AF
if((ch>='a') && (ch<='z')) StI
N+S@Z
printf("%c is a lowercase letter\n" ,ch); sC-o'13
else if ((ch>='A') && (ch<='Z')) XGSFG~d
print(" %c is a uppercase letter\n" ,ch); 072C!F
else if((ch>'0')&&(ch<'9') IA` voO$
printf(" %c is a number character between 0 and 9\n" ,ch) ; 8TP$ ?8l
else )=~&l={T
printf("%c is...") vXDs/,`r
:lB*km g
外面再加个循环就行了