如何簡單地判斷某時間是否在某區間內?
阿新 • • 發佈:2019-02-02
有意思,看下面程式:
#include <iostream> using namespace std; bool isSpecialTime(int hour, int minute) { /* [8:20 <= x:yz < 10:40) <==> 8.20 <= x.yz < 10.40 <==> 820 <= 100x + 10y + z < 1040 <==> 820 <= 100 * hour + minute < 1040 */ int result = 100 * hour + minute; if(result >= 820 && result < 1040) return true; return false; } int main() { int hour; int minute; for(hour = 7; hour < 12; hour++) { for(minute = 0; minute < 60; minute++) { if(isSpecialTime(hour, minute)) { if(minute >= 10) cout << hour << ":" << minute << endl; else cout << hour << ":" << "0" << minute << endl; } } } return 0; }