itoa()

char* itoa(int val, int base){
 
     static char buf[32] = {0};
 
     int i = 30;
 
     for(; val && i ; --i, val /= base)
 
          buf[i] = "0123456789abcdef"[val % base];
 
     return &buf[i+1];
 
}

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