How To Create Multiple Files And Makefile In VS Code On Windows

#ifndef __MainElectricityBill_H__
#define __MainElectricityBill_H__

#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<string.h>
#include<Windows.h>

struct ElectricBill
{
	char area[6];
	char name[15];
	int meternumber;
    int unitsconsumed;
	char email[15];
	char address[100];
	int phonenumber[10];
};

struct ElectricBill B;
#endif

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>
#include <Windows.h>
#include "MainElectricityBill.h"
#include "ElectricityBill.h"
void Urban();
void Rural();
void main()
{ 
	details();
	int option;
	do
	{
		printf("****Electricity Bill****\n");
		printf("Please enter your choice from below (1-2):\n");
		printf("1. Urban\n");
		printf("2. Rural\n");
		printf("3. EXIT\n");
		printf("Electricity Board Helpline: 8435 2340\n");
		printf("Enter your choice :\n");
		scanf("%d", &option);
		system("cls");
		switch (option)
		{
		case 1:
			Urban();
			break;
		case 2:
			Rural();
			break;
		default:
			printf("SORRY INVALID CHOICE!\n");
			printf("PLEASE CHOOSE FROM 1 or 2\n");
		}
		getch();
	} while (option != 3);
}

#ifndef __ElectricityBill_H__
#define __ElectricityBill_H__

void Urban();
void Rural();

#endif  

#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<string.h>
#include<Windows.h>
#include"MainElectricityBill.h"

void details()
{
    printf("Enter your  area name:\n");
	scanf("%s", B.area);
	printf("Enter your  name:\n");
	scanf("%s", B.name);
	printf("Enter your Meter Number:\n");
	scanf("%d", &B.meternumber);
    printf("Enter units consumed:\n");
	scanf("%d", &B.unitsconsumed);
    printf("Enter email ID :\n");
    scanf("%s", B.email);
    printf("Enter the permanent address :\n");
    scanf("%s", B.address);
    printf("Enter the phone number : \n");
    scanf("%s", B.phonenumber);
}

void Urban()
{
    int amount=0;
    B.unitsconsumed;
    if(B.unitsconsumed <=30 && B.unitsconsumed >= 0)
    {
        amount = B.unitsconsumed * 3.25; //3.25 is rupees
    }
    else if(B.unitsconsumed >= 31 && B.unitsconsumed <= 100)
    {
        amount = B.unitsconsumed * 4.70;
    }
    else if(B.unitsconsumed >= 101 && B.unitsconsumed <= 200)
    {
        amount = B.unitsconsumed * 6.25;
    }
    else
    {
        amount = B.unitsconsumed * 7.30;
    }

    printf("****Electricity Bill****\n\n");
    printf("Name : %s\n", B.name);
    printf("In Urban, your electricity bill is: %d\n", amount);
    printf("Units you consumed per month: %d\n", B.unitsconsumed);
}

void Rural()
{
    int amount=0;
    B.unitsconsumed;
    if(B.unitsconsumed <=30 && B.unitsconsumed >= 0)
    {
        amount = B.unitsconsumed * 3.15; //3.25 is rupees
    }
    else if(B.unitsconsumed >= 31 && B.unitsconsumed <= 100)
    {
        amount = B.unitsconsumed * 4.40;
    }
    else if(B.unitsconsumed >= 101 && B.unitsconsumed <= 200)
    {
        amount = B.unitsconsumed * 5.95;
    }
    else
    {
        amount = B.unitsconsumed * 6.80;
    }
    printf("****Electricity Bill****\n\n");
    printf("Name : %s\n", B.name);
    printf("In Rural, your electricity bill is: %d\n", amount);
    printf("Units you consumed per month: %d\n", B.unitsconsumed);
}

# Name of the project
PROJECT_NAME = Calculator

# Output directory
BUILD = build

# All source code files
SRC = ElectricityBill.c\
MainElectricityBill.c

# Project Output name
PROJECT_OUTPUT = $(BUILD)/$(PROJECT_NAME).out

# Default target built
$(PROJECT_NAME):all

# Run the target even if the matching name exists
.PHONY: run clean test doc all

all: $(SRC) $(BUILD)
	gcc $(SRC) $(INC) -o $(PROJECT_OUTPUT).out

# Call `make run` to run the application
run:$(PROJECT_NAME)
	./$(PROJECT_OUTPUT).out

# Document the code using Doxygen
#doc:
#	make -C ./documentation

# Build and run the unit tests
test:$(BUILD)
	gcc $(TEST_SRC) $(INC) -o $(TEST_OUTPUT)
	./$(TEST_OUTPUT)
#Coverage
coverageCheck:$(BUILD)
	g++ -fprofile-arcs -ftest-coverage -fPIC -O0 $(TEST_SRC) $(INC) -o $(TEST_OUTPUT)
	./$(TEST_OUTPUT)

# Remove all the built files, invoke by `make clean`
clean:
	rm -rf $(BUILD) $(DOCUMENTATION_OUTPUT)

# Create new build folder if not present
$(BUILD):
	mkdir build

Enter your  area name:    
Jawahar
Enter your  name:
Chetan
Enter your Meter Number:
12
Enter units consumed:
234
Enter email ID :
abc@gmail.com
Enter the permanent address :
MG
Enter the phone number : 
1234567890
****Electricity Bill****
Please enter your choice from below (1-2):
1. Urban
2. Rural
3. EXIT
Electricity Board Helpline: 8435 2340     
Enter your choice :
1

Name : Chetan
In Urban, your electricity bill is: 1708 rupees
Units you consumed per month: 234