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The atoi(), atol(), atoll(), and atof() functions convert the initial portion of a string token to int, long int, long long int, and double representation, respectively. Except for the behavior on error ([ISO/IEC 9899:20112024], s7.2224.1.2), they are equivalent to
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- The ato*() or scanf() family receives input that is not a number when trying to parse one
Bibliography
| [ISO/IEC 9899:20112024] | Subclause 7.2224.1, "Numeric conversion functions" Subclause 7.21.6, "Formatted input/output functions" |
| [Klein 2002] |
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