hdu 4788 Hard Disk Drive(水)

题目链接：hdu 4788 Hard Disk Drive

代码

#include <cstdio>#include <cstring>#include <algorithm>using namespace std;int idx(char ch) {    if (ch == 'B') return 0;    if (ch == 'K') return 1;    if (ch == 'M') return 2;    if (ch == 'G') return 3;    if (ch == 'T') return 4;    if (ch == 'P') return 5;    if (ch == 'E') return 6;    if (ch == 'Z') return 7;    if (ch == 'Y') return 8;    return 0;}int main () {    int cas;    scanf("%d", &cas);    for (int kcas = 1; kcas <= cas; kcas++) {        double k, p = 1;        char s[5];        scanf("%lf[%s]", &k, s);        int n = idx(s[0]);        for (int i = 0; i < n; i++)            p = p * 1000 / 1024;        printf("Case #%d: %.2lf%%\n", kcas, 100.0 * (1-p));    }    return 0;}