string of integers to integers in cpp code example
Example 1: string to int c++
#include <iostream>
#include <string>
int main() {
std::string str = "123";
int num;
// using stoi() to store the value of str1 to x
num = std::stoi(str);
std::cout << num;
return 0;
}
Example 2: string to number in c++
// For C++11 and later versions
string str1 = "45";
string str2 = "3.14159";
string str3 = "31337 geek";
int myint1 = stoi(str1);
int myint2 = stoi(str2);
int myint3 = stoi(str3);
// Output
stoi("45") is 45
stoi("3.14159") is 3
stoi("31337 geek") is 31337