To Carry or not to Carry

Dont forget to use format specifier for unsigned int %u

#include<iostream>
#include<cstdio>

int main()
{
    unsigned int a,b,output;
    while(scanf("%u %u",&a,&b)==2){
        output=a^b;
        printf("%u\n",output);
    }
    return 0;
}