Reading and Printing an Integer in Mips
My Program Is Suppose to Read an Integer and Print It Back to the User but Every Time It Just Prints 268501230 No Matter What Is Entered. Any Help Would Be...
My program is suppose to read an integer and print it back to the user but every time it just prints 268501230 no matter what is entered. Any help would be appreciated.
.data
prompt2: .asciiz "Please enter value: "
array1: .space 40
array2: .space 40
buffer: .space 4
.text
main:
#Prints the prompt2 string
li $v0, 4
la $a0, prompt2
syscall
#reads one integer from user and saves in t0
li $v0, 5
la $t0, buffer
syscall
li $v0, 1
li $t0, 5 # $integer to print
syscall
exitProgram: li $v0, 10 # system call to
syscall # terminate program
2 Answers
This is how I will write a program to get an integer input and to print it out
.data
text: .asciiz "Enter a number: "
.text
main:
# Printing out the text
li $v0, 4
la $a0, text
syscall
# Getting user input
li $v0, 5
syscall
# Moving the integer input to another register
move $t0, $v0
# Printing out the number
li $v0, 1
move $a0, $t0
syscall
# End Program
li $v0, 10
syscall
#reads one integer from user and saves in t0
li $v0, 5
la $t0, buffer
syscall
That's not how syscall 5 works. The integer is returned in $v0, so the code ought to be something like:
li $v0,5
syscall
move $t0,$v0
li $v0, 1
li $t0, 5 # $integer to print
syscall
You're using the wrong register here as well. The integer to print should go into $a0, not $t0.
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
