Ŀ

գҪıйص䡣
һrepeat (0<repeat<10)repeat㣺
ΪᳫԼõ磬ĳʡ˾ִ"ݵ"װһһľû۷Ϊ""õ50ǧʱڵģΪ0.53Ԫ/ǧʱ50ǧʱõϵ0.05Ԫ/ǧʱ
ûõe(ǧʱ)㲢ûӦ֧ĵ(Ԫ)2λС
ʾ˵

2        (repeat=2)
10       (e=10)	
100      (e=100)	

cost = 5.30
cost = 55.50



#include <stdio.h>
int main(void)
{   
    int repeat, ri;
    double cost, e;

    scanf("%d", &repeat);
    for(ri = 1; ri <= repeat; ri++){
        scanf("%lf", &e);
/*---------*/
        printf("cost = %.2f\n", cost);
    } 
}

