**Write a program to subtract, add, multiply, and divide 2 numbers (calculator program).****Write a program to print the ASCII value of a character.****Write a program to convert ASCII value to a character.****Write a program to convert a character from lower case to upper case and from upper case to lower case.****Write a program to calculate the percentage of marks of 5 subjects of a student.****Write a program to calculate the arithmetic mean, using formula am = (sum of n terms)/n.****Write a program to find any power of a number.****Write a program to find the square root and cube root of a number.****Write a program to find SIN, COS, sec, TAN, and COSEC of an angle.****Write a program to find quotient and remainder.****Write a program to swap two numbers.****Write a program to swap two numbers without using a third variable.****Write a program to print the sum of digits of a number.****Write a program to reverse a number.****Write a program to print the factorial of a number.****Write a program to find the area and perimeter of a rectangle, using the formula area = l*w and perimeter = 2*(l+w).****Write a program to find the area and circumference of a circle, using the formula area = 3.14 *radius**^{2}and circumference = 2 * π * radius.**Write a program to find surface area and volume of a cone, using formula sa = π * radius (radius + √(h**^{2}+r^{2})) and volume = π * radius^{2}* (height / 3).**Write a program to find the perimeter of a parallelogram, using the formula perimeter = 2 (side + base).****Write a program to convert centigrade to Fahrenheit using formula,***t*_{(°f)}=*t*_{(°c)}× 9/5 + 32 and Fahrenheit to centigrade using formula,*t*_{(°c)}= (*t*_{(°f)}– 32) × 5/9.**Write a program to find the area of a triangle using the formula****Program to find simple interest using the formula, simple interest = (p * t * r)/100, where p = principle amount, t= time period and r= rate of interest.****A program that asks the user how many eggs he/she has and then tells the user how many dozen eggs he/she has and how many extra eggs are leftover.****Write a program to solve the equation,***y = b*. The program should ask the values of variables^{2}– 4ac*a*,*b*and*c*from the user and display the result.