Check whether two numbers of opposite sign or not

#include<stdbool.h>
#include<stdio.h>


bool CheckOppositeSign(int a, int b)
{
        bool bRetValue = 0;
        bRetValue = ((a ^ b) < 0); // 1 iff a and b have opposite signs
        return bRetValue;
}


int main()
{
        int a = 0,b=0;
        bool bRetValue;
        //ENTER THE VALUE OF a & b

        printf("Enter the Value of a = ");
        scanf("%d",&a);
        printf("\nEnter the Value of b = ");
        scanf("%d",&b);

        bRetValue = CheckOppositeSign(a, b); // check signs of a & b

        if (true == bRetValue)
                printf ("\nIntegers have the opposite sign\n\n");
        else
                printf ("\nInteger have the same sign\n\n");

        return 0;
}