How to convert String to Float in C++ - Step by Step Examples

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How to convert String to Float in C++ ?

Answer

To convert a string to a float in C++, you can use the 'std::stof()' function from the 'string' header.

✐ Examples

1 Convert "3.14" String to Float

In this example,

We create a string variable str1 with a value of "3.14".
We use the std::stof() function to convert the string to a float and store the result in a variable float1.
Finally, we print the float value float1.

C++ Program

// Convert "3.14" String to Float
#include <iostream>
#include <string>
int main() {
    std::string str1 = "3.14";
    float float1 = std::stof(str1);
    std::cout << "Float value is: " << float1 << std::endl;
    return 0;
}

Output

Float value is: 3.14

2 Convert "10.5" String to Float

In this example,

We create a string variable str2 with a value of "10.5".
We use the std::stof() function to convert the string to a float and store the result in a variable float2.
Finally, we print the float value float2.

C++ Program

// Convert "10.5" String to Float
#include <iostream>
#include <string>
int main() {
    std::string str2 = "10.5";
    float float2 = std::stof(str2);
    std::cout << "Float value is: " << float2 << std::endl;
    return 0;
}

Output

Float value is: 10.5

Summary

In this tutorial, we learned How to convert String to Float in C++ language with well detailed examples.

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How to convert String to Float in C++ - Step by Step Examples

How to convert String to Float in C++ ?

Answer

✐ Examples

1 Convert "3.14" String to Float

C++ Program

Output

2 Convert "10.5" String to Float

C++ Program

Output

Summary

More C++ Strings Tutorials