/ Published in: C
A implementation for itoa with c.
itoa is function that convert a integer to a string.
itoa is function that convert a integer to a string.
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/** * C++ version 0.4 char* style "itoa": * Written by Lukás Chmela * Released under GPLv3. */ char* itoa_c(int value, char* result, int base) { // check that the base if valid if ( base < 2 || base > 36 ) { *result = '\0'; return result; } char* ptr = result, *ptr1 = result, tmp_char; int tmp_value; do { tmp_value = value; value /= base; *ptr++ = "zyxwvutsrqponmlkjihgfedcba9876543210123456789abcdefghijklmnopqrstuvwxyz"[35 + (tmp_value - value * base)]; } while ( value ); // Apply negative sign if ( tmp_value < 0 ) *ptr++ = '-'; *ptr-- = '\0'; while ( ptr1 < ptr ) { tmp_char = *ptr; *ptr-- = *ptr1; *ptr1++ = tmp_char; } return result; }
URL: http://www.strudel.org.uk/itoa/