Formal languages – Henry Poon's Blog https://blog.henrypoon.com Tue, 04 Oct 2022 22:02:37 +0000 en-US hourly 1 83044199 C++ String to Double or Integer Conversion https://blog.henrypoon.com/blog/2010/02/17/c-string-to-double-or-integer-conversion/ https://blog.henrypoon.com/blog/2010/02/17/c-string-to-double-or-integer-conversion/#respond Wed, 17 Feb 2010 23:00:36 +0000 http://henrypoon.mooo.com/blog/c-string-to-double-or-integer-conversion string str = "some number in the form of a string"; double a; int b; a = atof(str.c_str()); //conversion to double b = atoi(str.c_str()); //conversion to int

If the string that is being converted is actually not a number, then it will return a zero.

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