reading to unsigned int from text file in c? please help

[r3vdup]

Hello there Im trying to simulate machine code and have been given a set of codes

::text file contains::
B404
239A
2421
5345
350C
C000

Im trying to read in each hex number into an unsigned int array, what am i doing wrong?

#include <stdio.h>


int main() {
    FILE *f;
    unsigned int instr[80];
    
    f=fopen("a3.txt","r");
    
    while ( fscanf(f,"%x",instr) != EOF){
        int i=0;
        fscanf(f,"%x",&instr[i]);
        i++;
    }
    
    printf("%x %x %x",instr[0],instr[1],instr[2]);

    
    
    return 0;
}

from there onwards i need to extract 2bytes from one instruction and show output according to a set of Instructions.

for example:

1RXY - Load register r with value at memory address XY.

output would be somthing like this

PC INSTRUCTION - [R0 R1 R2 R3..etc..]


All i need to know is how to read each set of instruction into the array. How do i go about doing this?

-regards