Why does it make an error? Please! Help me correct it?

Question

#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

using namespace std;

int main() {
char strArr[20];
char numArr[20];
int num;
string str;

cin >> str;

strcpy(strArr, str);

// convert string to int
num = atoi(strArr);
printf(" Your string: %s\n Converted string: %d", strArr, num);

return 0;
}

Answer 1

strcpy() takes a const char* (C String) as its second argument and a char* as its first. You are trying to give it a string type. You need to convert it to a C string. After doing so your code will compile and run. I'm guessing by the atoi() call that you're expecting to get an int as input.

strcpy(strArr, str.c_str()); // convert str (string) to a C string (.c_str())

Answer 2

Please post the error.

Answer 3

I got it.
Thank you so much!