| 发表于:2007-07-16 09:14:51 楼主 |
#include <stdio.h> void main() { float rate1,rate2,rate3; double discount,total; printf( "\n请输入第一种商品的价格: "); scanf( "%f ",&rate1); printf( "\n请输入第二种商品的价格: "); scanf( "%f ",&rate2); printf( "\n请输入第三种商品的价格: "); scanf( "%f ",&rate3); total=rate1+rate2+rate3; if((rate1> 50) ¦ ¦(rate2> 50) ¦ ¦(rate3> 50) ¦ ¦(total> 100)) { discount=0.15*total; total=total-discount; printf( "\n折扣后总价为:%6.2f\n ",total); } else printf( "\n总价为:%6.2f\n ",total); } |
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