binary - Bit Selection in C -

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i trying select bits [0:2] , bits [6:8] of bit-string 1010000000001. bits [0:2] 001 , bits [6:8] 000. tried select these bits with:

int instr = 0x1401; int src2 = (instr & 0x0006); //get bits [2:0] int src1 = (instr & 0x01c0) >> 6; //get bits [6:8]  printf("%04x, %04x",src2, src1);

however getting src1 , src2 both 0000. can please me understand doing incorrectly can select bits [0:2] , [6:8]?

look @ code:

#include <stdio.h>  int main (void) {     unsigned instr = 0x1401;     unsigned src2 = instr & 0x0007;        //  7 in hex == 0000 0000 0111 in binary     unsigned src1 = (instr & 0x01c) >> 6;  // 1c in hex == 0001 1100 0000 in binary      printf("%04x, %04x", src2, src1); }

it masks out desired bits in instr , shifts them correct offset. also, when doing bit manipulation, unsigned types preferred.


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