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Running A Cryptography: Secret Message - C And C++ | Dream.In ...


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    5 Replies - 59 Views - Last Post: Today, 08:40 PM Rate Topic: -----

    #1 dondre2010 ?Icon User is offline

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    Posted Today, 05:14 PM

    I'm trying to do a program that hides a message in five words. Uses one of the characters in the five input strings to spell out one new word. Like a secret message. I've started the code, but am just confused on what exactly I'm getting wrong. I am a beginner, but really want to know this. Not looking for answers just guidance of some sort. Thanks in advance.
    
 #include <iostream> // For std::cout, std::cin, std::endl #include <string> // For std::string #include <cstdlib> #include <cmath>  using namespace std; // Allow cout, cin, endl, string instead of 					 // std::cout, std::cin, std::endl, std::string  int main() {     string word1 = "word1 ";     string word2 = "word2 ";     string word3 = "word3 ";     string word4 = "word4 ";     string word5 = "word5 ";     int int1 = 0;     int int2 = 0;     int int3 = 0;     int int4 = 0;     int int5 = 0;     int code = 0;      string ("word1, word2, word3, word4, word5");      cout << "Enter five words: ";     cin >> word1 >> word2 >> word3 >> word4 >> word5; 	cout << "Enter five integers: ";     cin >> int1 >> int2 >> int3 >> int4 >> int5;      string (word1 + word2 + word3 + word4);      string.subtr(int2, 5);     cout << cout << "Secret message: " << word1.substr( int1, 1) << word2.substr( int2, 1);      system("pause"); 	return 0; } 


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    Replies To: Running a Cryptography: Secret Message

    #2 Skydiver ?Icon User is online

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    Re: Running a Cryptography: Secret Message

    Posted Today, 05:47 PM

    I think you need to give us sample input and expected output, because it's not clear in your code exactly what you are trying to do.


    #3 dondre2010 ?Icon User is offline

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    Re: Running a Cryptography: Secret Message

    Posted Today, 06:05 PM

    The output should look like this:

    Enter five words: cheap energy can cause problems
    Enter five integers: 4 2 1 0 5
    Secret message: peace

    Italics are user inputs


    #4 dondre2010 ?Icon User is offline

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    Re: Running a Cryptography: Secret Message

    Posted Today, 07:37 PM

    Am I way off on this? I at least hope I have the right idea.


    #5 Skydiver ?Icon User is online

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    Re: Running a Cryptography: Secret Message

    Posted Today, 08:24 PM

    You don't need string::substr(). All you need is the string::at(), or the [] operator.

    Here's an example of what you can do with the [] operator:

    
 string alphabet = "abcdefghijklmnopqrstuvwxyz"; cout << alphabet[15] << alphabet[4] << alphabet[0] << alphabet[2] << alphabet[4] << endl; 


    #6 jimblumberg ?Icon User is online

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    Re: Running a Cryptography: Secret Message

    Posted Today, 08:40 PM

    First you should be using either std::vector or arrays instead of all the separate variables. Next it appears that your numbers corresponds to the index of the string so with the vector of strings of "Cheap", "energy", "can", "cause", "problems" and your vector of int of 4, 2, 1, 0, 5 your secret word would be "Cheap", "energy", "can, "cause", "problems, or "peace". You don't really need to use substr(), just create your secret string from the relevant characters of each string.

    Jim

    This post has been edited by jimblumberg: Today, 08:41 PM


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