Нow can i insert the desired character

[chebyrek]

I have such code of definition of the set character but I do not understand how to insert a comma over a certain character and to deduce it. You may want to use the function to copy the original line but with a comma before the specified element.

 #include <iostream>
#include <string.h>
using namespace std;
int main()
{
    setlocale(LC_ALL, "ru");
    char S1[50];
    char S2[50];
    char c;
    int i;
    bool f_is;
    cin.getline(S1, '\n');

    cin >> c;


    for (i = 0; i < strlen(S1); i++)
        if (S1[i] == c)
        {
            f_is = true;
            break;
        }

    if (f_is)
    {
        strcat(S1, S2);
        cout << "Символ " << c << " є в рядку" << endl;
    }
    else
    {
        cout << "Символу " << c << "немає в рядку" << endl;
}
}

[salem c]

So why aren't you using std::string for all this?

> if (S1[i] == c)
You need to record the value of i, so you can do the right strncpy() calls to extract bits of S1 to copy to S2.

[seeplus]

If you really need to use char array, then to insert a , before a specified char consider:

#include <iostream>

int main()
{
	const size_t arrsize {50};
	const char inschar {','};

	char S1[arrsize] {};
	char S2[arrsize] {};
	char c {};

	std::cout << "Enter words (max 50 chars): ";
	std::cin.getline(S1, arrsize);

	std::cout << "Enter specified element: ";
	std::cin >> c;

	for (char *p1 = S1, *p2 = S2, *p3 = p2 + arrsize - 2; p2 < p3 && *p1; *p2++ = *p1++)
		if (*p1 == c)
			*p2++ = inschar;

	std::cout << S1 << '\n';
	std::cout << S2 << '\n';
}

Enter words (max 50 chars): qweryasdeedfez
Enter specified element: e
qweryasdeedfez
qw,eryasd,e,edf,ez

[chebyrek]

Thank you for your help.