http://www.cplusplus.com/reference/cstdlib/strtoull/
unsigned long long int strtoull (const char* str, char** endptr, int base);
/* strtoull example */
#include <stdio.h> /* printf, NULL */
#include <stdlib.h> /* strtoull */
int main ()
{
char szNumbers[] = "250068492 7b06af00 1100011011110101010001100000 0x6fffff";
char * pEnd;
unsigned long long int ulli1, ulli2, ulli3, ulli4;
ulli1 = strtoull (szNumbers, &pEnd, 10);
ulli2 = strtoull (pEnd, &pEnd, 16);
ulli3 = strtoull (pEnd, &pEnd, 2);
ulli4 = strtoull (pEnd, NULL, 0);
printf ("The decimal equivalents are: %llu, %llu, %llu and %llu.\n", ulli1, ulli2, ulli3, ulli4);
return 0;
}
<결과>
The decimal equivalents are: 250068492, 2064035584, 208622688 and 7340031.
strtoul - Convert string to unsigned long integer (function )
atol - Convert string to long integer (function )
strtoll - Convert string to long long integer (function )
strtod - Convert string to double (function )
