number of characters in string
#include <iostream>
#include <string>
int main() {
std::string str;
std::cout << "Enter a string: ";
std::getline(std::cin, str);
int count = 0;
for (int i = 0; str[i] != '\0'; ++i) {
++count;
}
std::cout << "Number of characters in the string: " << count << std::endl;
return 0;
}