strtoul

2.13.2.6 strtoul Declaration: unsigned long int strtoul(const char *str, char **endptr, int base); The string pointed to by the argument str is converted to an unsigned long integer (type unsigned long int). Any initial whitespace characters are skipped (space, tab, carriage return, new line, vertical tab, or formfeed). The number may consist of an optional sign and a string […]

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strtol

2.13.2.5 strtol Declaration: long int strtol(const char *str, char **endptr, int base); The string pointed to by the argument str is converted to a long integer (type long int). Any initial whitespace characters are skipped (space, tab, carriage return, new line, vertical tab, or formfeed). The number may consist of an optional sign and a string of digits. Conversion […]

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atof

2.13.2.1 atof Declaration: double atof(const char *str); The string pointed to by the argument str is converted to a floating-point number (type double). Any initial whitespace characters are skipped (space, tab, carriage return, new line, vertical tab, or formfeed). The number may consist of an optional sign, a string of digits with an optional decimal character, and an […]

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errno

2.3.3 errno Declaration: int errno; The errno variable has a value of zero at the beginning of the program. If an error occurs, then this variable is given the value of the error number. Faydalı Yetersiz

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