学习笔记3

阿为

#include <stdio.h>

#define fanqie 3.7
#define jielan 7
#define xiqing 1.3
#define kongxincai 8
#define yangchong 2.4
#define youcai 9
#define huanggua 6.3
#define bailuobo 0.5

int main()
{
        float price;
        price=(2*fanqie+kongxincai+youcai)*0.5;//一斤等于0.5千克
        printf("小明需要给%.2f元\n",price);
       
        price=(3*xiqing+0.5*yangchong+5*huanggua)*0.5;
        printf("小红需要给%.2f元\n",price);

        price=(10*huanggua+20*bailuobo)*0.5;
        printf("小甲鱼需要给%.2f元\n",price);

        return 0;
}