#include <iostream>using namespace std;
char *itoa(int val, char *buf, int radix){ char *p, *first, temp; int digital; p = buf; if (val < 0) { *p++ = '-'; val = -val; } first = p; do { digital = val%radix; val /= radix; if (digital > 9) { *p++ = (char)(digital - 10 + 'A'); } else { *p++ = (char)(digital + '0'); } }while(val > 0); *p-- = '/0'; do { temp = *p; *p = *first; *first = temp; p--; first++; }while(first < p); return buf;}
void main(void){ int a = 255; int radix = 16; char str[64]; itoa(a, str, radix); cout << str << endl;}
