How to use stringstream method In C++
The stringstream method morphs the string object with a stream to make it seem like the data is being read from a stream. The library is primarily used for parsing data stored inside strings.
Example:
C++
#include <bits/stdc++.h>using namespace std;int main(){ unsigned x; // Hexadecimal String string str = "FF"; // Used for segregation of characters istringstream iss(str); // Converting to integer and storing the result in x iss >> hex >> x; cout << x;} |
Output:
255
Explanation:
Alike the previous examples, an unsigned integer variable and a string containing the hexadecimal code are stored in separate variables. Then the string is passed as an argument to the iss function. The function converts the regular string to a stream. Then the base field format is set to hex, leading to the conversion of the hexadecimal string to integer, and the result is stored in the variable x. It is done by using a hex manipulator. In the end, the unsigned value is displayed.
Convert Hex String to Signed Integer in C++
This article discusses converting a hex string to a signed integer in C++. There are 5 ways to do this in C++:
- Using stoi() function.
- Using stoul() function.
- Using sscanf() function.
- Using stringstream method.
- Using boost:lexical_cast.