Learn C++ | atoi vs stoi

learn_cpp_atoi_vs_stoi

atoi & stoi are the two ways in which type casting can be done in C & C++ respectively.

Uses:

• Type casting from string to int .

Concepts covered:

• initialize a string with a dummy value.
• Convert the string to int in C, C++.
• add 5 to the int value.
• Display the result in both C, C++.

Video:

Part 1:

part 1

Part 2:

part 2

Code snippet:

#include <iostream>  // std::cout
#include <string>  // std::string, std::stoi
int main() {
 std::string my_str_var = "12356";
 int my_int_var_c, my_int_var_cpp;
 // C++
 my_int_var_cpp = std::stoi(my_str_var);
 std::cout << my_int_var_cpp + 5 << '\n';
 // C
 const char* my_char_var = my_str_var.c_str();
 my_int_var_c = atoi(my_char_var);
 std::cout << my_int_var_c + 5 << '\n';
 
 return 0;
}

Github code

Thanks!

See you in my next blog post.

Happy Coding :)

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