Question

How to get the first two digits after the decimal point of a float number in C++

Answer 1

#include <iostream>
#include <string>

int main() {
    const double d = 2376.187952;

    const std::string s = std::to_string(d);
    
    size_t point_pos = s.find('.');
    
    std::cout << s.substr(point_pos + 1, 2) << std::endl;
}


    
/*
run:
    
18
    
*/

 

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