How to use string.substr() function?

Question

I want to make a program that will read some number in string format and output it like this: if the number is 12345 it should then output 12 23 34 45 . I tried using the su

Answer 1

Possible solution without using substr()

#include
#include

using namespace std;


int main() {
    string c="12345";
    int p=0;

    for(int i=0;i