Liangxu Linux
Jan 3, 2024 · Fundamentals
Master C String‑Number Conversion Functions: atof, atoi, atol, strtod, strtol, and More
This guide consolidates essential C standard library functions for converting between strings and numeric types—including atof, atoi, atol, gcvt, strtod, strtol, strtoul, toascii, tolower, and toupper—detailing their headers, prototypes, behavior, and practical code examples with expected outputs.
C#atofatoi
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