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Need help with a mips program
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Join Date: Sep 2007
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Hello everyone, I'm trying to create a program that will accept a string and output how many characters are in that string. The input can be a mixture of upper/lowercase letters, digits, spaces, and other cases such as .%^& etc.
This is my first time use any type of assembly language so please understand if I have trouble
This is what I have so far, the only thing it does right now is just output what I input, so if I input '"hello" the output will be "hello". Thanks for your help.
This is my first time use any type of assembly language so please understand if I have trouble
This is what I have so far, the only thing it does right now is just output what I input, so if I input '"hello" the output will be "hello". Thanks for your help.
assembly Syntax (Toggle Plain Text)
.data Q1: .asciiz "Please enter a string that is up to eighty characters: " ans1: .asciiz "\nThe length of the string you entered contains this many characters: " buffer: .space 80 # create space for string input .text .globl main #must be global main: li $v0, 4 # system call code for print_str la $a0, Q1 # address of string to print syscall # print the Q1 li $v0, 8 # code for syscall read_string la $a0, buffer # tell syscall where the buffer is li $a1, 80 # tell syscall how big the buffer is syscall li $v0, 8 # code for syscall read_string la $t0, buffer # place address of buffer in $t0 lb $t1, 0($t0) # read byte located at address in $t0 addi $t0, $t0, 0 # increment address in $t0 #sbrk $a0, 9 # the amount of how long the string is from the address li $v0, 4 la $a0, ans1 syscall li $v0, 4 move $a0, $t0 syscall jr $ra # return to system
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