#include <stdio.h>
int A=10;
int B=20;
char buy;
int sum,number;
int main(){
printf("以下是本店的商品及价格:\n A 商品每个十元;\n B 商品每个二十元;\n\n"); sum=buy=='A'?A*number:B*number;
printf("\n你所需要的%d个%c商品总共%d元。\n",number
,buy
,sum
); return 0;
}
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