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 31337string to int c++
// Both functions work identically though you'll need to use "#include <string>"
atoi( str.c_str() );
stoi( str );how to string to integer in c++
#include<string>
string str1 = "45";
string str2 = "3.14159";
string str3 = "31337 geek";
int myint1 = stoi(str1);
std::cout<<stoi(str1);how to convert string to int in c++
string s = "123";
int n = s.size();
int num = 0;
for(int i = 0 ; i<n;i++)//this what stoi built function do XD
{
num = num*10+(s[i]-'0');
}Copyright © 2021 Codeinu
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