find digits in character string c++
/* Extract all integers from string */
#include <iostream>
#include <sstream>
using namespace std;
void extractIntegerWords(string str)
{
stringstream ss;
/* Storing the whole string into string stream */
ss << str;
/* Running loop till the end of the stream */
string temp;
int found;
while (!ss.eof()) {
/* extracting word by word from stream */
ss >> temp;
/* Checking the given word is integer or not */
if (stringstream(temp) >> found)
cout << found << " ";
/* To save from space at the end of string */
temp = "";
}
}
// Driver code
int main()
{
string str = "1: 2 3 4 prakhar";
extractIntegerWords(str);
return 0;
}
