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c++doubleatof

Converting a string like "2.12e-6" to a double

Is there a built in function in c++ that can handle converting a string like "2.12e-6" to a double?

Solution

  • atof should do the job. This how its input should look like:

    A valid floating point number for atof is formed by a succession of:

An optional plus or minus sign 
A sequence of digits, optionally containing a decimal-point character 
An optional exponent part, which itself consists on an 'e' or 'E' character followed by an optional sign and a sequence of digits.