Hello, I need help with my this program. I have to define the 4 functions #inclu

Question

Hello, I need help with my this program. I have to define the 4 functions

#include <iostream>

#include <iomanip>

#include <cstdlib>

#include <cstring>

#include <sstream>

using namespace std;

string int2cpp (int); // 1. convert int to C++ string

void int2c (int, char[]); // 2. convert int to C-string

void cpp2c (string, char[]); // 3. convert C++ string to C-string

string c2cpp (char[]); // 4. convert C-string to C++ string

int cpp2int (string); // 5. convert C++ string to int

int c2int (char[]); // 6. convert C-string to int

// note: in the functions below, the first argument is the 'from'

// data structure and the second is the 'to'

void c2t (char[], char[]); // 7. convert C-string to char array w/o term

void t2c (char[], char[]); // 8. convert char array w/o term to C-string

int main(int argc, char * argv[])

{

string s1("1234");

string s3;

string s4;

char xy[10] = "567";

char qq[10];

char ca1[10];

char ca2[10];

char ct1[10];

char ct2[10];

int j;

int k;

// You will get credit if your code WORKS in the GENERAL CASE (i.e., not

// just for these specific examples) and does NOT use any character by

// character processing. (You can update ONE character; you just can't

// update an entire string one character at a time.)

// If you write the code for pratice, make sure to add some print statements

// in the driver so that you know your code works.

// Make sure your code does what is required, i.e., updates the correct

// argument or returns a value of the correct type. Notice that none of

// these functions asks you to print anything.

s4 = int2cpp(42); // #1

cout << s4 << endl;

int2c(42, ca1); // #2

cout << cal << endl;

/* cpp2c(s1, qq); // #3

s3 = c2cpp(xy); // #4

j = cpp2int(s1); // #5

k = c2int(xy); // #6

strncpy(ct2, xy, 2);

c2t(xy, ct1); // #7

t2c(ct2, ca2); // #8

*/

return 0;

}

// 1. Convert int to C++ string.

string int2cpp (int i)

{

   char* ch = itoa(i);

   string str = string(ch);

   return str;

}

Explanation / Answer

Please find the functions below. Check from your program if it is of help to you.

void int2c (int num, char[] value){
   sprintf(value, "%d", num);  
}

void cpp2c (string inp, char[] output){
   std::copy(inp.begin(), inp.end(), output);
   writable[inp.size()] = ''; // don't forget the terminating 0
}

string c2cpp (char[] input){
   std::string outputString(input);
   return outputString;
}

int cpp2int (string input){
   std::string::size_type sz; // alias of size_t
   return std::stoi (input,&sz);
}

int c2int (char[] input){
   int num = (int) strtol(input, (char **)NULL, 10);
   return num;

}

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