#include <stdio.h>
 
int main() {
    float h;
    int ts, ds;
    int SRate = 10;
    int pay;
 
    printf("กรอกจำนวนชั่วโมงที่ใช้: ");
    scanf("%f", &h);
 
    printf("กรอกส่วนลด: ");
    scanf("%d", &ds);
 
    // ปัดเศษชั่วโมง
    ts = (int)h;
    if (h - ts >= 0.5) {
        ts = ts + 1;
    }
 
    // คำนวณเงินที่ต้องจ่าย
    pay = (ts * SRate) - ds;
 
    printf("\nจำนวนชั่วโมงที่คิดเงิน = %d ชั่วโมง\n", ts);
    printf("เงินที่ต้องจ่าย = %d บาท\n", pay);
 
    return 0;
}
 

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