Detect Circular Pattern Match

Code

#include <stdio.h>
#include <stdint.h>

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    uint16_t a=0;
    int c=0;
    for(int i=0;i<16;i++){
        if(reg==target) return 1;
        a=1&(reg>>15);
        reg=((reg<<1)|a)&0xFFFF;
    }return 0; 
}

int main() {
    uint16_t reg, target;
    scanf("%hu %hu", &reg, &target);
    printf("%hhu", is_circular_match(reg, target));
    return 0;
}

Solving Approach