CODEWITHSUNDEEP
c++stringchar
Monkeyanator
Monkeyanator

Reputation: 1416

How Can I Take Many Chars and Put Them Into One String

I suppose I just never learned this. I have never done this before. I have seen the use of strcat(S1, S2), but that isn't applicable here, is it?

Can I do something like

string all_possible_strings[10]; 
char jumbled_chars[] = "ABCDEFG";
all_possible_strings[1] = jumbled_chars[0] << jumbled_chars[1] 
                              << jumbled_chars[2] << jumbled_chars[3] 
                              << jumbled_chars[4];

What I'm trying to do is make a program that can unscramble a word into all of its possible permutations.

Upvotes: 1

Views: 155

Answers (2)

Anthony
Anthony

Reputation: 12397

Use the append function or the operator+= overload of std::string. You should read up on the STL documentation.

If jumbled_chars is already in the order you want it, then you could just construct the string like

all_possible_strings[counter] = std::string(jumbled_chars, 5);

Update:

Ok, here's a few suggestions. Instead of storing your strings in an array, use std::vector instead.

std::vector<std::string> possible_strings;
std::string jumbled_chars; //This could be a char[] or char* or whatever

I'll leave figuring our exactly how to get all permutations of a string as an exercise for the reader. But say you want to get jumbled_chars in the order of w, x, y, z, where w-z are indices of jumbled_chars:

std::string str = "";
str += jumbled_chars[w];
str += jumbled_chars[x];
str += jumbled_chars[y];
str += jumbled_chars[z];

possible_strings.push_back(str);

Upvotes: 1

Cole
Cole

Reputation: 740

#include <iostream>
#include <string>

using namespace std;

int main()
{
        string theString = "";
        char a = 'a';
        char b = 'b';
        const char* c = "cdefghijklmnopqrstuvwxyz";

        theString += a;
        theString += b;
        theString += c;

        cout << theString;
        return 0;
}

That prints out the entire alphabet.

Upvotes: 7

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