### C Program 2 – Electricity Bill calculation

This program is to display the electricity bill calculation based on the number of units consumed every month

Input : the number of units – variable name – unit

Output – Amount of rupee – variable name – amount

Logic:

 Units Rupees 1-50 units 0.75/unit 51-100 0.85/unit 101-200 1.50/unit 201-300 2.20/unit >300 3.00/unit

In all the cases, there will be service charge of Rs.20 will be collected.

#include <stdio.h>
#include <conio.h>
int main()
{
float amount=0,units;;
printf("Enter the number of units");
scanf("%f", &units);
if(units <=50)
{
amount = units * 0.75;
}
else if(units >50 && units <=100)
{
amount=0.75 * 50 + 0.85*(units-50);
}
else if(units >100 && units <200)
{
amount=(0.75*50) + (0.85*50 )+ (1.5 *(units-100));
}
else if(units >200 && units <300)
{
amount=(0.75*50) + (0.85*50 )+ (1.5 *100) + (2.20 *(units-200));
}
else
{
amount=(0.75*50) + (0.85*50 )+ (1.5 *100) + (2.20 * 100) +(3.0*(units-300));
}
amount=amount+(0.2*amount);
printf("The total electricity bill is %f", amount);
getch();
return 0;
}

1. thanks really helped

2. please write few line, it will be easy to understand

4. i need c code for spot billing machine

5. helps very good...!!!!

6. if th units used is greater than 300 an intrest of 15% wil b given then hw 2 modify ys pgm

7. it gies good ideas"THANK U".good

8. dear sir ,
i wants write a program in c language to print an item (or product) bill with use of item_name, item_price, quantity_of_items,sell_item and total_of_amount.
so i need a help to make this type of program in c language.

thanks.....!

9. Helps very much yaar...!And could understand it very clearly.Thanks..!

### Installing TexLive 2019 in Ubuntu 18.04

Installation of TexLive 2019 in Linux (Ubuntu 18.04 LTS)
TeX (Tech)

Installation of TexLive 2019

Please watch the video for full installation

I used .iso file to download, the Total size is 3.3GB for Linux,

Extract the .iso file to a folder and open a terminal

\$] sudo ./install-tl
(it goes into a terminal mode, which is faster compared to the GUI Mode)

\$] sudo ./install-tl -gui
after the installation, set the PATH, MANPATH and INFOPATH as suggested by LATEX

export PATH=\$PATH:/usr/local/texlive/2019/bin/x86_64-linux
export MANPATH=/usr/local/texlive/2019/texmf-dist/doc/man
export INFOPATH=/usr/local/texlive/2019/texmf-dist/doc/info

put these lines in to the /home/pradeepkumar/.bashrc

We have installed TexLive 2019 and texstudio.

To install texstudio

\$] sudo apt install texstudio
The look and feel of TexStudio looks like this image.

texlive, it install everyt…

### Implementing a new system call in Kernel version 2.6.32

A system call is used by application or user programs to request service from the operating systems. Since the user programs does not have direct access to the kernel whereas the OS has the direct access. OS can access the hardware through system calls only.The following files has to be modified for implementing a system call/usr/src/linux-2.6.32.5/arch/x86/kernel/syscall_table_32.S/usr/src/linux-2.6.32.5/arch/x86/include/asm/unistd_32.h/usr/src/linux-2.6.32.5/include/linux/syscalls.h/usr/src/linux-2.6.32.5/MakefileNew set of files to be createdCreate a new directory newcall/ inside the path “/usr/src/linux-2.6.32.5/” Create new files Makefile, newcall.c and put them in the /usr/src/linux-2.6.32.5/newcall/ folder Create new user files (in any folder of Linux) to test the system call
testnewcall.c, testnewcall.h (created in /home/pradeepkumar) syscall_table_32.S Find the file /usr/src/linux-2.6.32.5/arch/x86/kernel/syscall_table_32.S and add the following line at the end
"…

### Electrical Machine Design (equations)

FactorsDC Machine Transformers Induction Machines Synchronous MachinesOutput EquationPa=CoD2Ln, where Pa=P/h for generators, Pa=P for motorsFor Single Phase
Q=2.22 f Bm Ai Kw Aw d10-3
For Three Phase
Q=3.33 f Bm Ai Kw Aw d 10-3Q=CoD2 L ns
KVA Input Q=
HP * 0.746 / Cos f * hQ=CoD2 L ns
KVA Input Q=
HP * 0.746 / Cos f * h
For Turbo alternators
Q=1.11Bavac KwsVa2 L 10-3/nsOutput CoefficientCo=Bav ac* 10-3where Bav-magnetic loading and ac - electric loadingDNACo=11 Kws Bav ac 10-3Co=11 Kws Bav ac 10-3 Choice of Magnetic LoadingFlux Density in Teeth Frequency of Flux Reversals Size of machineDNAMagnetizing current, Flux Density, Iron lossIron loss, Stability, Voltage Rating, Parallel Operation, Transient ShortCircuit current Choice of Electric LoadingTemperature rise,
speed of machine, Voltage, Armature reaction, CommutationDNAOverload Capacity, Copper losses, Temperature rise, Leakage ReactanceCopper loss, Synchronous reactance, Temperature rise, Stray Load losses,
Voltage rating Flux …