int ch ; { F'Kk\f%:
ch=getche() ; ]Ni;w]KE
if((ch>='a') && (ch<='z')) T/c<23i
printf("%c is a lowercase letter\n" ,ch); $55U+)C<
else if ((ch>='A') && (ch<='Z')) t ?h kL
print(" %c is a uppercase letter\n" ,ch); dLvJh#`o
else if((ch>'0')&&(ch<'9') lJzl6&
printf(" %c is a number character between 0 and 9\n" ,ch) ;
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else 9'DtaTmGW
printf("%c is...") T#
lP!c
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外面再加个循环就行了