Question

Rars Rise V please

Write a program that inserts a minus “-“ between all (!) double-consonants:

Tunnel -> Tun-nel Busseat -> Bus-seat

And so on..

Howto:

Write a program that lets you enter a string.

• Use ecall(12) readchar for that in a loop until carriage return.

• The string can be limited to 30 letters.

• Make a static string array in the data section holding at least 40 letters.

• Loop over the string searching for double-consonants.

• Have a second string for the result.

• Print the result string.

You can use:

.global _start # Provide program starting address to linker _start:

#loop
addi a7, x0, 12 # linux write system call

ecall .data

sourcestring: .ascii " " #30

targetstring: .ascii " "#40

Answer 1

#Could you please leave a THUMBS Up for my work...

RARS -- RISC-V Assembler and Runtime Simulator:

It is used to assemble and simulate the execution of RISC-V assembly language programs.Its goal is to make an effective development environment.

Some features of RARS -- RISC-V Assembler and Runtime Simulator:

Number of system calls that match behaviour from MARS or SPIKE.

Debugging using breakpoints and/or ebreak is Supported.

RISC-V IMFDN Base (riscv32 and riscv64).

Simultaniously compare psuedo-instruction to machine code with intermediate steps.

Multifile assembly using either files open or a directory.

Program that inserts a minus “-“between all (!) double constants :

.global _start # Gives starting address to linker

_start:

la t1,sourcestring

li t2,10 #enter consonants

loop:

addi a7,x0,12 #readchar

ecall

# input is stored in a0

sb a0,0(t1)

addi t1,t1,1

bne a0,t2,loop

sb x0,0(t1)

.data

sourcestring: .word 30 #String Limit 30 letters

targetstring: .word 40 #Static String array holding 40 letters