c++ - How to find the position of a digit and use them - 


#include <iostream> #include <math.h> #include <string> #include <sstream> using namespace std;  int main() {     string input;     int value,     cout << "input number: " << endl;    cin >> input;    const int count = input.length();    istringstream buffer(input);    buffer >> value;    if (count == 4) {

my program suppose count length of number, if it's 4 encode digits. eg. 1234 turns other digits. question how take each individual digit , use them. eg. take (1+1)/10, or (3+2)/10.

you can character in string using bracket notation, e.g input[0] first character in string.


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