yqm15fqu@cmp-16pi-16 ARMCW]$ cat test | ./cw2
^C
[yqm15fqu@cmp-16pi-16 ARMCW]$ nano cw2.s
[yqm15fqu@cmp-16pi-16 ARMCW]$ cat test | ./cw2
^X^C
[yqm15fqu@cmp-16pi-16 ARMCW]$ nano cw2.s
  GNU nano 2.8.6                                        File: cw2.s

@print.s
.data
string: .word 0
char: .asciz "%c"
.text
        .global main
        .extern printf
main:


        PUSH {r4,lr}

        MOV r5,r0
        MOV r6,r1
@       LDR r0,=pattern
@       LDR r1,=string
@       BL scanf

getchar:

        BL getchar
        ADDS r0, #1
        BEQ end

        MOV r1, r0
        CMP r1, #90
        BLE remcaps



remcaps:

        CMP r0, #65
        BLE end

        ADD r0, #32
        BL end



@       LDR r0,=string
@       BL printf

@       MOV r2, #1
@loop:
@       CMP r2, #6
@       bgt end
@       LDR r0,=string
@       BL printf
@       add r2,r2,#1
@       b loop
@

@get:
@       CMP r1, #10
@       bgt end
@       BL getchar
@       ADD r0, r1
@       b get


end:

@       LDR r0,=string
@       BL printf