Write a C program to input electricity unit charge and calculate the total electricity bill according to the given condition:

For first $50$ units Rs$.0\mathrm{.}50/$unit

For next $100$ units Rs$.0\mathrm{.}75/$unit

For next $100$ units Rs$.1\mathrm{.}20/$unit

For unit above $250$ Rs$.1\mathrm{.}50/$unit

An additional surcharge of $20\%$ is added to the bill.

How to calculate electricity bill using if else in $C$ programming. Program to find electricity bill using if else in C$.$ Logic to find net electricity bill in C program.