[مخالف - طلب حل : ]بحاجه الى مساعده

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واشكر جهودكم سلفا

write aprogram that performs the following:
a. count characters. change text numbers to integers and converts capital character to small.
b. cos(x),sin(x)
c.count perfects,count digits and prime number
d.binary and decimal
e.exit


if user presses a or A ,the following sub menu should be displayed
1-count characters
(program should read s set of characters from the keyboard until q is pressed.the program should count the occurrence of each of these characters (a,e and r))

2-change text number to integer:
(program reads a text containing mixed text and number,your program prints the numbers only as integers)

3-capital to small:
(program reads any character and converts it to small)

4-return to the main menu

if user presses b or B , the following sub menu should be displayed:
1-sin(x)
(sin(x)=(x-x^3\3!+x^5\5!-x^7\7!.....x^n!)
cos(x)
cos(x)=1-x-x^2\2!-x^4\4!-x^6/6!.....x^n!)
3- return the main menu

if user presses c or C the following sub menu should be displayed :
count perfects,
(program should counts the perfect numbers from 1 to 500)
2-count digits:
(program should counts the digits of any integer as : following:x=123digits=3)
sum of prime:finds the sum of primes from 1 to 100)
4-return to the main menu

if user presses d  or D , the following sub menu should be displayed:
1- binary to decimal
(program should  reads a binary number and convert it to decimal)

2- decimal to binary
(program reads a decimal number and convert it to binary)

3-return to the main menu

to Exit press e or E