ຄິດໄລ່ຄ່າໂທລະສັບ, ອິນເຕີເນັດ, ໄຟຟ້າ ແລະ ນ້ຳ

ເມນູ

1. ໂທລະສັບ

2. ໄຟຟ້າ

3. ນ້ຳ

**ເງື່ອນໄຂ**

1. ໂທລະສັບ

*ຄ່າໂທ 1 ນາທີ = 800 ກີບ

**ຄ່າອິນເຕີເນັດ 1 MB = 1’000 ກີບ

***ຄ່າຂໍ້ຄວາມ 1 ຂໍ້ຄວາມ = 100 ກີບ

2. ໄຟຟ້າ

*0-9 = 5’000 ກີບ

**10-49 = 10’000 ກີບ

*** >=50 = 20’000 ກີບ

3. ນ້ຳ

*0-9 = 500 ກີບ

**10-49 = 1’000 ກີບ

***50-99 = 1’500 ກີບ

****>=100 = 2’500 ກີບ

#include <stdio.h>
#include <conio.h>
int mobile();
int electricity();
int water();
main()
{
int choice;
char option;
printf(“Which service do you want to calculate?\n”);
printf(“1. Mobile\n2. Electricity\n3. Water\n”);
scanf(“%d”,&choice);
switch (choice)
{
case 1 : mobile();
break;
case 2 : electricity();
break;
case 3 : water();
break;
default : printf(“Incorrect number”);
}
}


int mobile()
{
int call, internet, sms, call_price, internet_price, sms_price, sum;
printf(“\t **Mobile**\n”);
printf(“\tEnter usage’s value\n”);
printf(“Call time (min): “);
scanf(“%d”,&call);
printf(“Internet (MB): “);
scanf(“%d”,&internet);
printf(“SMS: “);
scanf(“%d”,&sms);
call_price = 800 * call;
internet_price = 1000 * internet;
sms_price = 100 * sms;
sum = call_price + internet_price + sms_price;
printf(“Call %d min\nInternet %d MBs\nSMS %d Messages\n”,call,internet,sms);
printf(“sum = %d KIP\n”,sum);
}
int electricity()
{
int electric, electric_0_9, electric_10_49, electric_50_up, electric_price;
printf(“\t **Electricity**\n”);
printf(“\tEnter usage’s value (KW): “);
scanf(“%d”,&electric);
if (electric == 0 || electric < 10)
{
electric_0_9 = 5000 * electric;
electric_price = electric_0_9;
printf(“\t 0-9 = %d\n”,electric_0_9);
printf(“\tsum = %d KIP”,electric_price);
}
else if (electric >= 10 && electric < 50)
{
electric_0_9 = 5000 * 9;
electric_10_49 = 10000 * (electric-9);
electric_price = electric_0_9 + electric_10_49;
printf(“\t 0-9 = %d\n”,electric_0_9);
printf(“\t 10-49 = %d\n”,electric_10_49);
printf(“\tsum = %d KIP”,electric_price);
}
else if (electric >=50)
{
electric_0_9 = 5000 * 9;
electric_10_49 = 10000 * 40;
electric_50_up = 20000 * (electric-49);
electric_price = electric_0_9 + electric_10_49 + electric_50_up;
printf(“\t 0- = %d\n”,electric_0_9);
printf(“\t 10-49 = %d\n”,electric_10_49);
printf(“\t >=50 = %d\n”,electric_50_up);
printf(“\t sum = %d KIP”,electric_price);
}
else
{
printf(“Your given number is not correct”);
}
}
int water()
{
int water, water_0_9, water_10_49, water_50_99, water_100_up, water_price;
printf(“\t Water\n”);
printf(“\tEnter usage’s value (M square): “);
scanf(“%d”,&water);
if (water == 0 || water < 10)
{
water_0_9 = 500 * water;
water_price = water_0_9;
printf(“\t 0-9 = %d\n”,water_0_9);
printf(“\t sum = %d KIP\n”,water_price);
}
else if (water >= 10 && water < 50)
{
water_0_9 = 500 * 9;
water_10_49 = 1000 * (water-9);
water_price = water_0_9 + water_10_49;
printf(“\t 0-9 = %d\n”,water_0_9);
printf(“\t 10-49 = %d\n”,water_10_49);
printf(“\t sum = %d KIP\n”,water_price);
}
else if (water >= 50 && water < 100)
{
water_0_9 = 500 * 9;
water_10_49 = 1000 * 40;
water_50_99 = 1500 * (water-49);
water_price = water_0_9 + water_10_49 + water_50_99;
printf(“\t 0-9 = %d\n”,water_0_9);
printf(“\t 10-49 = %d\n”,water_10_49);
printf(“\t 50-99 = %d\n”,water_50_99);
printf(“\t sum = %d KIP\n”,water_price);
}
else if (water >= 100)
{
water_0_9 = 500 * 9;
water_10_49 = 1000 * 40;
water_50_99 = 1500 * 50;
water_100_up = 2500 * (water-99);
water_price = water_0_9 + water_10_49 + water_50_99 + water_100_up;
printf(“\t 0-9 = %d\n”,water_0_9);
printf(“\t 10-49 = %d\n”,water_10_49);
printf(“\t 50-99 = %d\n”,water_50_99);
printf(“\t >=100 = %d\n”,water_100_up);
printf(“\t sum = %d KIP\n”,water_price);
}
else
{
printf(“Your given number is not correct”);
}
}