知识点:
分支控制:分支控制
向上取整:ceil()
#include <cmath> #include <iostream> using namespace std; int main() { float a = 0.0; char b = 'n'; float fee = 0.0; cin >> a >> b; // fee = 20 + int((a - 1) + 0.9); fee = 20 + ceil(a - 1); if (b == 'y') { fee += 5; } cout << fee; return 0; }