Question

Requriements：

Submit only the files requested

Print all floats to 2 decimal points unless stated otherwise

Descripition ：

For this problem you will be implementing a Caesarin Cipher. A Caesarin Cipher takes a string and a shift amount and shift the characters in the string by the shift amount.

Specifications：

Only characters should be ciphered

If a character is shifted beyond the end of the aphabet it should wrap back around

For example if the letter 'y' is shifted 3 it will become 'b'

You will find the functions chr and ord very helpful for this assignment

ord takes in a single character and gives back its ascii value

ord('a') is 97

ord('B') is 66

chr takes an integer number and gives back the character it represents

chr(97) is 'a'

chr('B') is 66

Combining these ideas together

chr(ord('a') + 2) is 'c'

chr(ord('B') + 3) is 'E'

Assumptions：

Input will not always be valid

If invalid input is received your program should continue to ask for more input until a valid value is entered

While input may be invalid it will always be of the correct type

Valid Input：

Shift amount: a value between 0 and 25

String to be ciphered: any string is valid

Example 1

Please enter a string to be ciphered: abcXYZ

Please enter a shift amount between 0 and 25: 1

bcdYZA

Example 2

Please enter a string to be ciphered: ABCxyz 123

Please enter a shift amount between 0 and 25: 3

DEFabc 123

Answer 1

the c++ program is

#include <iostream> #include using namespace std; 1 <string> 3 4 6 7 int cheaks (string str, int n) int i; for i-ej i< str.length) ++i) if(lisalpha(str[i])) 12 13 return 8; if(n>25 I In«8) 15 16 17 18 19 return 0; return 1; 21 22 string Enc(string text, int s) 23 24 25 26 27 28 29 string result = ""; for (int i-0ji<text.length()ji++) if (isupper(text[i])) result +-char(int (text[1]+s-65)%26 +65); 31 32 else result char(int (text [1]+5-97)%26 +97); += 34 35 36 L1 return result;

CAUsers staff Documents cea.exe Please enter a string to be ciphered :Uital Please enter a shift amount between and 25:5 Given input is correct Text : Uital Shift: 5 Cipher Anyf

37 38 int main) string strj int n,V j 40 do cout«c"\n Please enter a string to be ciphered :"; cin>>str; cout«c"\n Please enter a shift amount between 0 and 25 :"; 45 46 47 48 49 50 51 52 53 54 v-cheaks(str, n)j while(!v); cout«c"\n Given input is correct\n"; cout くく "Text : " くく str; cout くく "YnShift: " くく n; cout くく "\n\nCipher: " くく Enc(str,n); return 8; Debug |鳳Find Results Close Lines: 55 Length: 1014 Done parsing in 0.016 seconds DEV Insert 1:36 PM 10/22/2017