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2.1.6.38 strtol

Description

Converts a character string to a long int value.

long strtol( const char * str, char ** endptr, int base )

str: [input] Points to a character string to convert.
endptr: [output] if not NULL, returns a string beginning with the first character that strtol() does not attempt to convert.
base: [input] the base of the string, between 0 and 36.

returns the converted integral number as a long int value, else zero value is returned.

EX1

void strtol_ex()
{
    long ret = strtol(" -0xa2", NULL, 16);    
    printf("%ld\n", ret);
}

origin.h